390432293 has 2 divisors, whose sum is σ = 390432294. Its totient is φ = 390432292.

The previous prime is 390432277. The next prime is 390432373. The reversal of 390432293 is 392234093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315488644 + 74943649 = 17762^2 + 8657^2 .

It is a cyclic number.

It is not a de Polignac number, because 390432293 - 2⁴ = 390432277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390432253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195216146 + 195216147.

It is an arithmetic number, because the mean of its divisors is an integer number (195216147).

Almost surely, 2^390432293 is an apocalyptic number.

It is an amenable number.

390432293 is a deficient number, since it is larger than the sum of its proper divisors (1).

390432293 is an equidigital number, since it uses as much as digits as its factorization.

390432293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 390432293 is about 19759.3596303119. The cubic root of 390432293 is about 730.8842059939.

The spelling of 390432293 in words is "three hundred ninety million, four hundred thirty-two thousand, two hundred ninety-three".