402432407 has 8 divisors (see below), whose sum is σ = 456198960. Its totient is φ = 351924480.

The previous prime is 402432397. The next prime is 402432409. The reversal of 402432407 is 704234204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402432407 - 2¹⁰ = 402431383 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 (402432409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814394 + ... + 814887.

It is an arithmetic number, because the mean of its divisors is an integer number (57024870).

Almost surely, 2^402432407 is an apocalyptic number.

402432407 is a deficient number, since it is larger than the sum of its proper divisors (53766553).

402432407 is a wasteful number, since it uses less digits than its factorization.

402432407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629313.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 402432407 is about 20060.7180080873. The cubic root of 402432407 is about 738.2967932270.

The spelling of 402432407 in words is "four hundred two million, four hundred thirty-two thousand, four hundred seven".