390157 has 2 divisors, whose sum is σ = 390158. Its totient is φ = 390156.

The previous prime is 390151. The next prime is 390161. The reversal of 390157 is 751093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206116 + 184041 = 454^2 + 429^2 .

It is a cyclic number.

It is not a de Polignac number, because 390157 - 2¹¹ = 388109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195078 + 195079.

It is an arithmetic number, because the mean of its divisors is an integer number (195079).

2³⁹⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

390157 is a deficient number, since it is larger than the sum of its proper divisors (1).

390157 is an equidigital number, since it uses as much as digits as its factorization.

390157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 390157 is about 624.6254877925. The cubic root of 390157 is about 73.0712383958.

The spelling of 390157 in words is "three hundred ninety thousand, one hundred fifty-seven".