48931139 has 2 divisors, whose sum is σ = 48931140. Its totient is φ = 48931138.

The previous prime is 48931123. The next prime is 48931159. The reversal of 48931139 is 93113984.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48931139 - 2⁴ = 48931123 is a prime.

It is not a weakly prime, because it can be changed into another prime (48931159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24465569 + 24465570.

It is an arithmetic number, because the mean of its divisors is an integer number (24465570).

Almost surely, 2^48931139 is an apocalyptic number.

48931139 is a deficient number, since it is larger than the sum of its proper divisors (1).

48931139 is an equidigital number, since it uses as much as digits as its factorization.

48931139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 48931139 is about 6995.0796278527. The cubic root of 48931139 is about 365.7590733272.

The spelling of 48931139 in words is "forty-eight million, nine hundred thirty-one thousand, one hundred thirty-nine".