402388607 has 4 divisors (see below), whose sum is σ = 402514896. Its totient is φ = 402262320.

The previous prime is 402388603. The next prime is 402388621. The reversal of 402388607 is 706883204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402388607 - 2² = 402388603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402388603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58238 + ... + 64779.

It is an arithmetic number, because the mean of its divisors is an integer number (100628724).

Almost surely, 2^402388607 is an apocalyptic number.

402388607 is a deficient number, since it is larger than the sum of its proper divisors (126289).

402388607 is a wasteful number, since it uses less digits than its factorization.

402388607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126288.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 402388607 is about 20059.6262926307. The cubic root of 402388607 is about 738.2700073020.

The spelling of 402388607 in words is "four hundred two million, three hundred eighty-eight thousand, six hundred seven".