379698139 has 2 divisors, whose sum is σ = 379698140. Its totient is φ = 379698138.

The previous prime is 379698079. The next prime is 379698149. The reversal of 379698139 is 931896973.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-379698139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 379698139.

It is not a weakly prime, because it can be changed into another prime (379698149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189849069 + 189849070.

It is an arithmetic number, because the mean of its divisors is an integer number (189849070).

Almost surely, 2^379698139 is an apocalyptic number.

379698139 is a deficient number, since it is larger than the sum of its proper divisors (1).

379698139 is an equidigital number, since it uses as much as digits as its factorization.

379698139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 379698139 is about 19485.8445801048. The cubic root of 379698139 is about 724.1238017435.

The spelling of 379698139 in words is "three hundred seventy-nine million, six hundred ninety-eight thousand, one hundred thirty-nine".