49023997 has 6 divisors (see below), whose sum is σ = 53886014. Its totient is φ = 44567160.

The previous prime is 49023977. The next prime is 49024021. The reversal of 49023997 is 79932094.

It can be written as a sum of positive squares in only one way, i.e., 33860761 + 15163236 = 5819^2 + 3894^2 .

It is a de Polignac number, because none of the positive numbers 2^k-49023997 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 (49023977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202458 + ... + 202699.

Almost surely, 2^49023997 is an apocalyptic number.

It is an amenable number.

49023997 is a deficient number, since it is larger than the sum of its proper divisors (4862017).

49023997 is a wasteful number, since it uses less digits than its factorization.

49023997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405179 (or 405168 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 49023997 is about 7001.7138616199. The cubic root of 49023997 is about 365.9902975520.

The spelling of 49023997 in words is "forty-nine million, twenty-three thousand, nine hundred ninety-seven".