1423477440 has 672 divisors, whose sum is σ = 6276441600. Its totient is φ = 293529600.

The previous prime is 1423477423. The next prime is 1423477463. The reversal of 1423477440 is 447743241.

It is a happy number.

1423477440 is a `hidden beast` number, since 142 + 3 + 4 + 77 + 440 = 666.

It is a Cunningham number, because it is equal to 37729²-1.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a junction number, because it is equal to n+sod(n) for n = 1423477395 and 1423477404.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10866175 + ... + 10866305.

Almost surely, 2^1423477440 is an apocalyptic number.

1423477440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423477440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3138220800).

1423477440 is an abundant number, since it is smaller than the sum of its proper divisors (4852964160).

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

1423477440 is a wasteful number, since it uses less digits than its factorization.

1423477440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The square root of 1423477440 is about 37728.9999867476. Note that the first 4 decimals coincide. The cubic root of 1423477440 is about 1124.9076309347.

The spelling of 1423477440 in words is "one billion, four hundred twenty-three million, four hundred seventy-seven thousand, four hundred forty".