139077379 has 4 divisors (see below), whose sum is σ = 158945584. Its totient is φ = 119209176.

The previous prime is 139077361. The next prime is 139077457. The reversal of 139077379 is 973770931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139077379 - 2²⁷ = 4859651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139077079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9934092 + ... + 9934105.

It is an arithmetic number, because the mean of its divisors is an integer number (39736396).

Almost surely, 2^139077379 is an apocalyptic number.

139077379 is a deficient number, since it is larger than the sum of its proper divisors (19868205).

139077379 is an equidigital number, since it uses as much as digits as its factorization.

139077379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19868204.

The product of its (nonzero) digits is 250047, while the sum is 46.

The square root of 139077379 is about 11793.1072665350. The cubic root of 139077379 is about 518.1062514660.

The spelling of 139077379 in words is "one hundred thirty-nine million, seventy-seven thousand, three hundred seventy-nine".