390901501 has 2 divisors, whose sum is σ = 390901502. Its totient is φ = 390901500.

The previous prime is 390901493. The next prime is 390901513. The reversal of 390901501 is 105109093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310816900 + 80084601 = 17630^2 + 8949^2 .

It is a cyclic number.

It is not a de Polignac number, because 390901501 - 2³ = 390901493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 390901501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390901541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195450750 + 195450751.

It is an arithmetic number, because the mean of its divisors is an integer number (195450751).

Almost surely, 2^390901501 is an apocalyptic number.

It is an amenable number.

390901501 is a deficient number, since it is larger than the sum of its proper divisors (1).

390901501 is an equidigital number, since it uses as much as digits as its factorization.

390901501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 390901501 is about 19771.2291221360. The cubic root of 390901501 is about 731.1768725567.

The spelling of 390901501 in words is "three hundred ninety million, nine hundred one thousand, five hundred one".