402390173 has 8 divisors (see below), whose sum is σ = 412104000. Its totient is φ = 392692608.

The previous prime is 402390169. The next prime is 402390179. The reversal of 402390173 is 371093204.

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 402390173 - 2² = 402390169 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 (402390179) 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, 56813 + ... + 63501.

It is an arithmetic number, because the mean of its divisors is an integer number (51513000).

Almost surely, 2^402390173 is an apocalyptic number.

402390173 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

402390173 is a deficient number, since it is larger than the sum of its proper divisors (9713827).

402390173 is a wasteful number, since it uses less digits than its factorization.

402390173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 402390173 is about 20059.6653262212. The cubic root of 402390173 is about 738.2709650241.

The spelling of 402390173 in words is "four hundred two million, three hundred ninety thousand, one hundred seventy-three".