49617865 has 12 divisors (see below), whose sum is σ = 65447172. Its totient is φ = 36085280.

The previous prime is 49617863. The next prime is 49617889. The reversal of 49617865 is 56871694.

It can be written as a sum of positive squares in 2 ways, for example, as 5035536 + 44582329 = 2244^2 + 6677^2 .

It is not a de Polignac number, because 49617865 - 2¹ = 49617863 is a prime.

It is a super-4 number, since 4×49617865⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49617863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40402 + ... + 41611.

It is an arithmetic number, because the mean of its divisors is an integer number (5453931).

Almost surely, 2^49617865 is an apocalyptic number.

It is an amenable number.

49617865 is a deficient number, since it is larger than the sum of its proper divisors (15829307).

49617865 is a wasteful number, since it uses less digits than its factorization.

49617865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82040 (or 82029 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 49617865 is about 7043.9949602481. The cubic root of 49617865 is about 367.4622171038.

The spelling of 49617865 in words is "forty-nine million, six hundred seventeen thousand, eight hundred sixty-five".