40430637 has 32 divisors (see below), whose sum is σ = 64915200. Its totient is φ = 24722496.

The previous prime is 40430623. The next prime is 40430647. The reversal of 40430637 is 73603404.

40430637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40430637 - 2¹⁵ = 40397869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40430637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80128 + ... + 80630.

It is an arithmetic number, because the mean of its divisors is an integer number (2028600).

Almost surely, 2^40430637 is an apocalyptic number.

It is an amenable number.

40430637 is a deficient number, since it is larger than the sum of its proper divisors (24484563).

40430637 is a wasteful number, since it uses less digits than its factorization.

40430637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 40430637 is about 6358.5090233482. The cubic root of 40430637 is about 343.2181093432.

The spelling of 40430637 in words is "forty million, four hundred thirty thousand, six hundred thirty-seven".