49996639 has 8 divisors (see below), whose sum is σ = 62333568. Its totient is φ = 38958360.

The previous prime is 49996633. The next prime is 49996663. The reversal of 49996639 is 93669994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49996639 - 2³ = 49996631 is a prime.

It is a super-2 number, since 2×49996639² = 4999327822592642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49996639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49996631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324577 + ... + 324730.

It is an arithmetic number, because the mean of its divisors is an integer number (7791696).

Almost surely, 2^49996639 is an apocalyptic number.

49996639 is a deficient number, since it is larger than the sum of its proper divisors (12336929).

49996639 is a wasteful number, since it uses less digits than its factorization.

49996639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649325.

The product of its digits is 2834352, while the sum is 55.

The square root of 49996639 is about 7070.8301492823. The cubic root of 49996639 is about 368.3948949925.

It can be divided in two parts, 499966 and 39, that added together give a palindrome (500005).

The spelling of 49996639 in words is "forty-nine million, nine hundred ninety-six thousand, six hundred thirty-nine".