402444607 has 2 divisors, whose sum is σ = 402444608. Its totient is φ = 402444606.

The previous prime is 402444599. The next prime is 402444649. The reversal of 402444607 is 706444204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402444607 - 2³ = 402444599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402444907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201222303 + 201222304.

It is an arithmetic number, because the mean of its divisors is an integer number (201222304).

Almost surely, 2^402444607 is an apocalyptic number.

402444607 is a deficient number, since it is larger than the sum of its proper divisors (1).

402444607 is an equidigital number, since it uses as much as digits as its factorization.

402444607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 402444607 is about 20061.0220826358. The cubic root of 402444607 is about 738.3042538007.

The spelling of 402444607 in words is "four hundred two million, four hundred forty-four thousand, six hundred seven".