23090639 has 12 divisors (see below), whose sum is σ = 27278712. Its totient is φ = 19375200.

The previous prime is 23090633. The next prime is 23090647. The reversal of 23090639 is 93609032.

It is not a de Polignac number, because 23090639 - 2⁸ = 23090383 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 (23090633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4352 + ... + 8069.

It is an arithmetic number, because the mean of its divisors is an integer number (2273226).

Almost surely, 2^23090639 is an apocalyptic number.

23090639 is a deficient number, since it is larger than the sum of its proper divisors (4188073).

23090639 is a wasteful number, since it uses less digits than its factorization.

23090639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458 (or 12445 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 23090639 is about 4805.2720006260. The cubic root of 23090639 is about 284.7597811676.

The spelling of 23090639 in words is "twenty-three million, ninety thousand, six hundred thirty-nine".