49921407 has 16 divisors (see below), whose sum is σ = 74460000. Its totient is φ = 33054912.

The previous prime is 49921397. The next prime is 49921411. The reversal of 49921407 is 70412994.

It is not a de Polignac number, because 49921407 - 2⁶ = 49921343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49921007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182 + ... + 10227.

It is an arithmetic number, because the mean of its divisors is an integer number (4653750).

Almost surely, 2^49921407 is an apocalyptic number.

49921407 is a deficient number, since it is larger than the sum of its proper divisors (24538593).

49921407 is a wasteful number, since it uses less digits than its factorization.

49921407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12567 (or 12561 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 49921407 is about 7065.5082619724. The cubic root of 49921407 is about 368.2100225806.

The spelling of 49921407 in words is "forty-nine million, nine hundred twenty-one thousand, four hundred seven".