390562849 has 2 divisors, whose sum is σ = 390562850. Its totient is φ = 390562848.

The previous prime is 390562817. The next prime is 390562867. The reversal of 390562849 is 948265093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281736225 + 108826624 = 16785^2 + 10432^2 .

It is an emirp because it is prime and its reverse (948265093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 390562849 - 2⁵ = 390562817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390562799 and 390562808.

It is not a weakly prime, because it can be changed into another prime (390565849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195281424 + 195281425.

It is an arithmetic number, because the mean of its divisors is an integer number (195281425).

Almost surely, 2^390562849 is an apocalyptic number.

It is an amenable number.

390562849 is a deficient number, since it is larger than the sum of its proper divisors (1).

390562849 is an equidigital number, since it uses as much as digits as its factorization.

390562849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 390562849 is about 19762.6630037553. The cubic root of 390562849 is about 730.9656632966.

It can be divided in two parts, 39056 and 2849, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 390562849 in words is "three hundred ninety million, five hundred sixty-two thousand, eight hundred forty-nine".