49387969 has 12 divisors (see below), whose sum is σ = 52258500. Its totient is φ = 46665344.

The previous prime is 49387967. The next prime is 49387999. The reversal of 49387969 is 96978394.

49387969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28227969 + 21160000 = 5313^2 + 4600^2 .

It is not a de Polignac number, because 49387969 - 2¹ = 49387967 is a prime.

It is a super-2 number, since 2×49387969² = 4878342963889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49387963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46557 + ... + 47605.

It is an arithmetic number, because the mean of its divisors is an integer number (4354875).

Almost surely, 2^49387969 is an apocalyptic number.

It is an amenable number.

49387969 is a deficient number, since it is larger than the sum of its proper divisors (2870531).

49387969 is a wasteful number, since it uses less digits than its factorization.

49387969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 1161 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The square root of 49387969 is about 7027.6574333130. The cubic root of 49387969 is about 366.8938136171.

The spelling of 49387969 in words is "forty-nine million, three hundred eighty-seven thousand, nine hundred sixty-nine".