49790731 has 4 divisors (see below), whose sum is σ = 50182912. Its totient is φ = 49398552.

The previous prime is 49790723. The next prime is 49790759. The reversal of 49790731 is 13709794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49790731 - 2³ = 49790723 is a prime.

It is a super-2 number, since 2×49790731² = 4958233787028722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49790761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195900 + ... + 196153.

It is an arithmetic number, because the mean of its divisors is an integer number (12545728).

Almost surely, 2^49790731 is an apocalyptic number.

49790731 is a deficient number, since it is larger than the sum of its proper divisors (392181).

49790731 is a wasteful number, since it uses less digits than its factorization.

49790731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392180.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 49790731 is about 7056.2547431339. The cubic root of 49790731 is about 367.8884620817. Note that the first 3 decimals are identical.

The spelling of 49790731 in words is "forty-nine million, seven hundred ninety thousand, seven hundred thirty-one".