49791921 has 32 divisors (see below), whose sum is σ = 71233536. Its totient is φ = 30888000.

The previous prime is 49791919. The next prime is 49791923. The reversal of 49791921 is 12919794.

It is an interprime number because it is at equal distance from previous prime (49791919) and next prime (49791923).

It is not a de Polignac number, because 49791921 - 2¹ = 49791919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49791923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380026 + ... + 380156.

It is an arithmetic number, because the mean of its divisors is an integer number (2226048).

Almost surely, 2^49791921 is an apocalyptic number.

It is an amenable number.

49791921 is a deficient number, since it is larger than the sum of its proper divisors (21441615).

49791921 is a wasteful number, since it uses less digits than its factorization.

49791921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293.

The product of its digits is 40824, while the sum is 42.

The square root of 49791921 is about 7056.3390649826. The cubic root of 49791921 is about 367.8913929068.

It can be divided in two parts, 4979 and 1921, that multiplied together give a palindrome (9564659).

The spelling of 49791921 in words is "forty-nine million, seven hundred ninety-one thousand, nine hundred twenty-one".