23391629 has 4 divisors (see below), whose sum is σ = 23411040. Its totient is φ = 23372220.

The previous prime is 23391619. The next prime is 23391649. The reversal of 23391629 is 92619332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23391629 - 2⁸ = 23391373 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 (23391619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7769 + ... + 10350.

It is an arithmetic number, because the mean of its divisors is an integer number (5852760).

Almost surely, 2^23391629 is an apocalyptic number.

It is an amenable number.

23391629 is a deficient number, since it is larger than the sum of its proper divisors (19411).

23391629 is a wasteful number, since it uses less digits than its factorization.

23391629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19410.

The product of its digits is 17496, while the sum is 35.

The square root of 23391629 is about 4836.4893259471. The cubic root of 23391629 is about 285.9917393738.

The spelling of 23391629 in words is "twenty-three million, three hundred ninety-one thousand, six hundred twenty-nine".