402509222 has 8 divisors (see below), whose sum is σ = 616610016. Its totient is φ = 196972552.

The previous prime is 402509213. The next prime is 402509227. The reversal of 402509222 is 222905204.

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

It is a junction number, because it is equal to n+sod(n) for n = 402509191 and 402509200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402509227) 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, 2140913 + ... + 2141100.

It is an arithmetic number, because the mean of its divisors is an integer number (77076252).

Almost surely, 2^402509222 is an apocalyptic number.

402509222 is a deficient number, since it is larger than the sum of its proper divisors (214100794).

402509222 is a wasteful number, since it uses less digits than its factorization.

402509222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282062.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 402509222 is about 20062.6324793134. The cubic root of 402509222 is about 738.3437648088.

The spelling of 402509222 in words is "four hundred two million, five hundred nine thousand, two hundred twenty-two".