402472391903 has 8 divisors (see below), whose sum is σ = 404833110528. Its totient is φ = 400112067744.

The previous prime is 402472391899. The next prime is 402472391921. The reversal of 402472391903 is 309193274204.

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 402472391903 - 2² = 402472391899 is a prime.

It is a super-2 number, since 2×402472391903² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402472391963) 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, 2089826 + ... + 2274272.

It is an arithmetic number, because the mean of its divisors is an integer number (50604138816).

Almost surely, 2^402472391903 is an apocalyptic number.

402472391903 is a deficient number, since it is larger than the sum of its proper divisors (2360718625).

402472391903 is a wasteful number, since it uses less digits than its factorization.

402472391903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197233.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 402472391903 in words is "four hundred two billion, four hundred seventy-two million, three hundred ninety-one thousand, nine hundred three".