23399429421 has 8 divisors (see below), whose sum is σ = 31200233344. Its totient is φ = 15599122560.

The previous prime is 23399429413. The next prime is 23399429429. The reversal of 23399429421 is 12492499332.

It is an interprime number because it is at equal distance from previous prime (23399429413) and next prime (23399429429).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23399429421 - 2³ = 23399429413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23399429429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4701 + ... + 216381.

It is an arithmetic number, because the mean of its divisors is an integer number (3900029168).

Almost surely, 2^23399429421 is an apocalyptic number.

It is an amenable number.

23399429421 is a deficient number, since it is larger than the sum of its proper divisors (7800803923).

23399429421 is a wasteful number, since it uses less digits than its factorization.

23399429421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248531.

The product of its digits is 839808, while the sum is 48.

The spelling of 23399429421 in words is "twenty-three billion, three hundred ninety-nine million, four hundred twenty-nine thousand, four hundred twenty-one".