1423635408 has 60 divisors (see below), whose sum is σ = 4290684580. Its totient is φ = 438041088.

The previous prime is 1423635407. The next prime is 1423635419. The reversal of 1423635408 is 8045363241.

1423635408 is a `hidden beast` number, since 14 + 2 + 3 + 635 + 4 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390141504 + 1033493904 = 19752^2 + 32148^2 .

It is a super-2 number, since 2×1423635408² = 4053475549822652928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423635407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378373 + ... + 382116.

Almost surely, 2^1423635408 is an apocalyptic number.

1423635408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1423635408 is an abundant number, since it is smaller than the sum of its proper divisors (2867049172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423635408 is a wasteful number, since it uses less digits than its factorization.

1423635408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760516 (or 760507 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1423635408 is about 37731.0933846344. The cubic root of 1423635408 is about 1124.9492409691.

Adding to 1423635408 its reverse (8045363241), we get a palindrome (9468998649).

The spelling of 1423635408 in words is "one billion, four hundred twenty-three million, six hundred thirty-five thousand, four hundred eight".