23977593409 has 27 divisors (see below), whose sum is σ = 30673734273. Its totient is φ = 18674548200.

The previous prime is 23977593383. The next prime is 23977593421. The reversal of 23977593409 is 90439577932.

It is a happy number.

The square root of 23977593409 is 154847.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 23977593409 - 2¹¹ = 23977591361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23977593469) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11922214 + ... + 11924224.

Almost surely, 2^23977593409 is an apocalyptic number.

23977593409 is the 154847-th square number.

23977593409 is the 77424-th centered octagonal number.

It is an amenable number.

23977593409 is a deficient number, since it is larger than the sum of its proper divisors (6696140864).

23977593409 is an frugal number, since it uses more digits than its factorization.

23977593409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 58.

The spelling of 23977593409 in words is "twenty-three billion, nine hundred seventy-seven million, five hundred ninety-three thousand, four hundred nine".