402422439 has 8 divisors (see below), whose sum is σ = 553871872. Its totient is φ = 259627320.

The previous prime is 402422417. The next prime is 402422443. The reversal of 402422439 is 934224204.

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

It is not a de Polignac number, because 402422439 - 2¹³ = 402414247 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 (402422459) 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, 2163469 + ... + 2163654.

It is an arithmetic number, because the mean of its divisors is an integer number (69233984).

Almost surely, 2^402422439 is an apocalyptic number.

402422439 is a deficient number, since it is larger than the sum of its proper divisors (151449433).

402422439 is a wasteful number, since it uses less digits than its factorization.

402422439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327157.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 402422439 is about 20060.4695608054. The cubic root of 402422439 is about 738.2906974595.

The spelling of 402422439 in words is "four hundred two million, four hundred twenty-two thousand, four hundred thirty-nine".