49929381 has 6 divisors (see below), whose sum is σ = 72120230. Its totient is φ = 33286248.

The previous prime is 49929377. The next prime is 49929409. The reversal of 49929381 is 18392994.

It can be written as a sum of positive squares in only one way, i.e., 48525156 + 1404225 = 6966^2 + 1185^2 .

It is not a de Polignac number, because 49929381 - 2² = 49929377 is a prime.

It is a super-2 number, since 2×49929381² = 4985886174086322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49929301) 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, 2773846 + ... + 2773863.

Almost surely, 2^49929381 is an apocalyptic number.

It is an amenable number.

49929381 is a deficient number, since it is larger than the sum of its proper divisors (22190849).

49929381 is a wasteful number, since it uses less digits than its factorization.

49929381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547715 (or 5547712 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49929381 is about 7066.0725300552. The cubic root of 49929381 is about 368.2296263978.

The spelling of 49929381 in words is "forty-nine million, nine hundred twenty-nine thousand, three hundred eighty-one".