49399889 has 16 divisors (see below), whose sum is σ = 62851200. Its totient is φ = 38490480.

The previous prime is 49399877. The next prime is 49399891. The reversal of 49399889 is 98899394.

It is not a de Polignac number, because 49399889 - 2⁴ = 49399873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49399849) 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, 2774 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (3928200).

Almost surely, 2^49399889 is an apocalyptic number.

49399889 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

49399889 is a deficient number, since it is larger than the sum of its proper divisors (13451311).

49399889 is a wasteful number, since it uses less digits than its factorization.

49399889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13125 (or 13111 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 59.

The square root of 49399889 is about 7028.5054599111. The cubic root of 49399889 is about 366.9233283792.

The spelling of 49399889 in words is "forty-nine million, three hundred ninety-nine thousand, eight hundred eighty-nine".