390426733 has 2 divisors, whose sum is σ = 390426734. Its totient is φ = 390426732.

The previous prime is 390426727. The next prime is 390426787. The reversal of 390426733 is 337624093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378613764 + 11812969 = 19458^2 + 3437^2 .

It is an emirp because it is prime and its reverse (337624093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 390426733 - 2⁹ = 390426221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390426692 and 390426701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390424733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195213366 + 195213367.

It is an arithmetic number, because the mean of its divisors is an integer number (195213367).

Almost surely, 2^390426733 is an apocalyptic number.

It is an amenable number.

390426733 is a deficient number, since it is larger than the sum of its proper divisors (1).

390426733 is an equidigital number, since it uses as much as digits as its factorization.

390426733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 390426733 is about 19759.2189369924. The cubic root of 390426733 is about 730.8807365613.

The spelling of 390426733 in words is "three hundred ninety million, four hundred twenty-six thousand, seven hundred thirty-three".