401802237 has 6 divisors (see below), whose sum is σ = 580381022. Its totient is φ = 267868152.

The previous prime is 401802211. The next prime is 401802239. The reversal of 401802237 is 732208104.

It can be written as a sum of positive squares in only one way, i.e., 397045476 + 4756761 = 19926^2 + 2181^2 .

It is not a de Polignac number, because 401802237 - 2⁷ = 401802109 is a prime.

It is a super-2 number, since 2×401802237² = 322890075316408338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401802237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401802239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22322338 + ... + 22322355.

Almost surely, 2^401802237 is an apocalyptic number.

It is an amenable number.

401802237 is a deficient number, since it is larger than the sum of its proper divisors (178578785).

401802237 is a wasteful number, since it uses less digits than its factorization.

401802237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44644699 (or 44644696 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 401802237 is about 20045.0052881011. The cubic root of 401802237 is about 737.9112249176.

The spelling of 401802237 in words is "four hundred one million, eight hundred two thousand, two hundred thirty-seven".