1423398387 has 24 divisors (see below), whose sum is σ = 2029081600. Its totient is φ = 886606560.

The previous prime is 1423398377. The next prime is 1423398391. The reversal of 1423398387 is 7838933241.

It is not a de Polignac number, because 1423398387 - 2⁴ = 1423398371 is a prime.

It is a super-2 number, since 2×1423398387² = 4052125936228403538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423398367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69114 + ... + 87312.

Almost surely, 2^1423398387 is an apocalyptic number.

1423398387 is a deficient number, since it is larger than the sum of its proper divisors (605683213).

1423398387 is a wasteful number, since it uses less digits than its factorization.

1423398387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291 (or 18262 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 1423398387 is about 37727.9523298045. The cubic root of 1423398387 is about 1124.8868065866.

The spelling of 1423398387 in words is "one billion, four hundred twenty-three million, three hundred ninety-eight thousand, three hundred eighty-seven".