49737891 has 48 divisors (see below), whose sum is σ = 82473984. Its totient is φ = 26522496.

The previous prime is 49737889. The next prime is 49737901. The reversal of 49737891 is 19873794.

It is not a de Polignac number, because 49737891 - 2¹ = 49737889 is a prime.

It is a super-2 number, since 2×49737891² = 4947715602255762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49737891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49737851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158751 + ... + 159063.

It is an arithmetic number, because the mean of its divisors is an integer number (1718208).

Almost surely, 2^49737891 is an apocalyptic number.

49737891 is a deficient number, since it is larger than the sum of its proper divisors (32736093).

49737891 is a wasteful number, since it uses less digits than its factorization.

49737891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 393 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The square root of 49737891 is about 7052.5095533434. The cubic root of 49737891 is about 367.7582764924.

The spelling of 49737891 in words is "forty-nine million, seven hundred thirty-seven thousand, eight hundred ninety-one".