49998729 has 16 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 29482560.

The previous prime is 49998727. The next prime is 49998743. The reversal of 49998729 is 92789994.

It is not a de Polignac number, because 49998729 - 2¹ = 49998727 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49998727) 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, 19254 + ... + 21695.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 2^49998729 is an apocalyptic number.

It is an amenable number.

49998729 is a deficient number, since it is larger than the sum of its proper divisors (24694071).

49998729 is a wasteful number, since it uses less digits than its factorization.

49998729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41000.

The product of its digits is 2939328, while the sum is 57.

The square root of 49998729 is about 7070.9779380224. The cubic root of 49998729 is about 368.4000282349.

The spelling of 49998729 in words is "forty-nine million, nine hundred ninety-eight thousand, seven hundred twenty-nine".