390562481 has 2 divisors, whose sum is σ = 390562482. Its totient is φ = 390562480.

The previous prime is 390562451. The next prime is 390562489. The reversal of 390562481 is 184265093.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390418081 + 144400 = 19759^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 390562481 - 2¹⁴ = 390546097 is a prime.

It is a super-2 number, since 2×390562481² = 305078103129750722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (390562489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195281240 + 195281241.

It is an arithmetic number, because the mean of its divisors is an integer number (195281241).

Almost surely, 2^390562481 is an apocalyptic number.

It is an amenable number.

390562481 is a deficient number, since it is larger than the sum of its proper divisors (1).

390562481 is an equidigital number, since it uses as much as digits as its factorization.

390562481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 390562481 is about 19762.6536932670. The cubic root of 390562481 is about 730.9654337173.

The spelling of 390562481 in words is "three hundred ninety million, five hundred sixty-two thousand, four hundred eighty-one".