40634375 has 12 divisors (see below), whose sum is σ = 50793624. Its totient is φ = 32505000.

The previous prime is 40634371. The next prime is 40634381. The reversal of 40634375 is 57343604.

It is not a de Polignac number, because 40634375 - 2² = 40634371 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40634371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3377 + ... + 9626.

It is an arithmetic number, because the mean of its divisors is an integer number (4232802).

Almost surely, 2^40634375 is an apocalyptic number.

40634375 is a deficient number, since it is larger than the sum of its proper divisors (10159249).

40634375 is an frugal number, since it uses more digits than its factorization.

40634375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13028 (or 13008 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 40634375 is about 6374.5097850737. The cubic root of 40634375 is about 343.7936583667.

Adding to 40634375 its reverse (57343604), we get a palindrome (97977979).

The spelling of 40634375 in words is "forty million, six hundred thirty-four thousand, three hundred seventy-five".