23049639 has 6 divisors (see below), whose sum is σ = 33293936. Its totient is φ = 15366420.

The previous prime is 23049629. The next prime is 23049659. The reversal of 23049639 is 93694032.

It is a happy number.

It is not a de Polignac number, because 23049639 - 2¹⁶ = 22984103 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 (23049629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1280527 + ... + 1280544.

Almost surely, 2^23049639 is an apocalyptic number.

23049639 is a deficient number, since it is larger than the sum of its proper divisors (10244297).

23049639 is a wasteful number, since it uses less digits than its factorization.

23049639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561077 (or 2561074 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23049639 is about 4801.0039575072. The cubic root of 23049639 is about 284.5911404177.

The spelling of 23049639 in words is "twenty-three million, forty-nine thousand, six hundred thirty-nine".