402024397 has 2 divisors, whose sum is σ = 402024398. Its totient is φ = 402024396.

The previous prime is 402024353. The next prime is 402024433. The reversal of 402024397 is 793420204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379041961 + 22982436 = 19469^2 + 4794^2 .

It is a cyclic number.

It is not a de Polignac number, because 402024397 - 2⁷ = 402024269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402024307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201012198 + 201012199.

It is an arithmetic number, because the mean of its divisors is an integer number (201012199).

Almost surely, 2^402024397 is an apocalyptic number.

It is an amenable number.

402024397 is a deficient number, since it is larger than the sum of its proper divisors (1).

402024397 is an equidigital number, since it uses as much as digits as its factorization.

402024397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 402024397 is about 20050.5460524146. The cubic root of 402024397 is about 738.0471990680.

The spelling of 402024397 in words is "four hundred two million, twenty-four thousand, three hundred ninety-seven".