49639902 has 16 divisors (see below), whose sum is σ = 106916880. Its totient is φ = 15273792.

The previous prime is 49639879. The next prime is 49639907. The reversal of 49639902 is 20993694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49639907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318127 + ... + 318282.

It is an arithmetic number, because the mean of its divisors is an integer number (6682305).

Almost surely, 2^49639902 is an apocalyptic number.

49639902 is an abundant number, since it is smaller than the sum of its proper divisors (57276978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49639902 is a wasteful number, since it uses less digits than its factorization.

49639902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636427.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 49639902 is about 7045.5590267913. The cubic root of 49639902 is about 367.5166099207.

The spelling of 49639902 in words is "forty-nine million, six hundred thirty-nine thousand, nine hundred two".