390535133 has 2 divisors, whose sum is σ = 390535134. Its totient is φ = 390535132.

The previous prime is 390535129. The next prime is 390535183. The reversal of 390535133 is 331535093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275659609 + 114875524 = 16603^2 + 10718^2 .

It is a cyclic number.

It is not a de Polignac number, because 390535133 - 2² = 390535129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 390535133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390535183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195267566 + 195267567.

It is an arithmetic number, because the mean of its divisors is an integer number (195267567).

Almost surely, 2^390535133 is an apocalyptic number.

It is an amenable number.

390535133 is a deficient number, since it is larger than the sum of its proper divisors (1).

390535133 is an equidigital number, since it uses as much as digits as its factorization.

390535133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 32.

The square root of 390535133 is about 19761.9617700268. The cubic root of 390535133 is about 730.9483720773.

The spelling of 390535133 in words is "three hundred ninety million, five hundred thirty-five thousand, one hundred thirty-three".