48139990 has 16 divisors (see below), whose sum is σ = 87104448. Its totient is φ = 19155456.

The previous prime is 48139967. The next prime is 48140017. The reversal of 48139990 is 9993184.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10542 + ... + 14401.

It is an arithmetic number, because the mean of its divisors is an integer number (5444028).

Almost surely, 2^48139990 is an apocalyptic number.

48139990 is a deficient number, since it is larger than the sum of its proper divisors (38964458).

48139990 is a wasteful number, since it uses less digits than its factorization.

48139990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25143.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 48139990 is about 6938.2987828430. The cubic root of 48139990 is about 363.7770794230. Note that the first 3 decimals are identical.

The spelling of 48139990 in words is "forty-eight million, one hundred thirty-nine thousand, nine hundred ninety".