401401237 has 4 divisors (see below), whose sum is σ = 414349696. Its totient is φ = 388452780.

The previous prime is 401401223. The next prime is 401401243. The reversal of 401401237 is 732104104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401401237 is a prime.

It is a super-2 number, since 2×401401237² = 322245906130260338, which 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 (401401537) 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, 6474183 + ... + 6474244.

It is an arithmetic number, because the mean of its divisors is an integer number (103587424).

Almost surely, 2^401401237 is an apocalyptic number.

It is an amenable number.

401401237 is a deficient number, since it is larger than the sum of its proper divisors (12948459).

401401237 is a wasteful number, since it uses less digits than its factorization.

401401237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12948458.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 401401237 is about 20035.0002994759. Note that the first 3 decimals coincide. The cubic root of 401401237 is about 737.6656639047.

The spelling of 401401237 in words is "four hundred one million, four hundred one thousand, two hundred thirty-seven".