400074037 has 6 divisors (see below), whose sum is σ = 439750934. Its totient is φ = 363703560.

The previous prime is 400073981. The next prime is 400074043. The reversal of 400074037 is 730470004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 274432356 + 125641681 = 16566^2 + 11209^2 .

It is not a de Polignac number, because 400074037 - 2¹¹ = 400071989 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 (400074637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1653078 + ... + 1653319.

Almost surely, 2^400074037 is an apocalyptic number.

It is an amenable number.

400074037 is a deficient number, since it is larger than the sum of its proper divisors (39676897).

400074037 is a wasteful number, since it uses less digits than its factorization.

400074037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306419 (or 3306408 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 400074037 is about 20001.8508393598. The cubic root of 400074037 is about 736.8517560303.

It can be divided in two parts, 40007 and 4037, that added together give a palindrome (44044).

The spelling of 400074037 in words is "four hundred million, seventy-four thousand, thirty-seven".