390146879 has 2 divisors, whose sum is σ = 390146880. Its totient is φ = 390146878.

The previous prime is 390146843. The next prime is 390146891. The reversal of 390146879 is 978641093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390146879 - 2⁸ = 390146623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390146579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195073439 + 195073440.

It is an arithmetic number, because the mean of its divisors is an integer number (195073440).

Almost surely, 2^390146879 is an apocalyptic number.

390146879 is a deficient number, since it is larger than the sum of its proper divisors (1).

390146879 is an equidigital number, since it uses as much as digits as its factorization.

390146879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 390146879 is about 19752.1360617023. The cubic root of 390146879 is about 730.7060654724.

The spelling of 390146879 in words is "three hundred ninety million, one hundred forty-six thousand, eight hundred seventy-nine".