390424733 has 2 divisors, whose sum is σ = 390424734. Its totient is φ = 390424732.

The previous prime is 390424721. The next prime is 390424739. The reversal of 390424733 is 337424093.

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., 367795684 + 22629049 = 19178^2 + 4757^2 .

It is a cyclic number.

It is not a de Polignac number, because 390424733 - 2²⁴ = 373647517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390424693 and 390424702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390424739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195212366 + 195212367.

It is an arithmetic number, because the mean of its divisors is an integer number (195212367).

Almost surely, 2^390424733 is an apocalyptic number.

It is an amenable number.

390424733 is a deficient number, since it is larger than the sum of its proper divisors (1).

390424733 is an equidigital number, since it uses as much as digits as its factorization.

390424733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 390424733 is about 19759.1683276397. The cubic root of 390424733 is about 730.8794885560.

The spelling of 390424733 in words is "three hundred ninety million, four hundred twenty-four thousand, seven hundred thirty-three".