49957965 has 40 divisors (see below), whose sum is σ = 90073368. Its totient is φ = 26490240.

The previous prime is 49957961. The next prime is 49957969. The reversal of 49957965 is 56975994.

49957965 is a `hidden beast` number, since 4 + 9 + 9 + 579 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (49957961) and next prime (49957969).

It can be written as a sum of positive squares in 4 ways, for example, as 2802276 + 47155689 = 1674^2 + 6867^2 .

It is not a de Polignac number, because 49957965 - 2² = 49957961 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49957961) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 118455 + ... + 118875.

Almost surely, 2^49957965 is an apocalyptic number.

49957965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49957965 is a deficient number, since it is larger than the sum of its proper divisors (40115403).

49957965 is a wasteful number, since it uses less digits than its factorization.

49957965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 722 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 49957965 is about 7068.0948635400. The cubic root of 49957965 is about 368.2998820769.

The spelling of 49957965 in words is "forty-nine million, nine hundred fifty-seven thousand, nine hundred sixty-five".