40634401 has 4 divisors (see below), whose sum is σ = 40701952. Its totient is φ = 40566852.

The previous prime is 40634389. The next prime is 40634417. The reversal of 40634401 is 10443604.

It is a happy number.

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 not a de Polignac number, because 40634401 - 2⁹ = 40633889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40634431) 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, 32865 + ... + 34078.

It is an arithmetic number, because the mean of its divisors is an integer number (10175488).

Almost surely, 2^40634401 is an apocalyptic number.

It is an amenable number.

40634401 is a deficient number, since it is larger than the sum of its proper divisors (67551).

40634401 is an equidigital number, since it uses as much as digits as its factorization.

40634401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67550.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40634401 is about 6374.5118244459. The cubic root of 40634401 is about 343.7937316924.

It can be divided in two parts, 4063 and 4401, that added together give a square (8464 = 92²).

The spelling of 40634401 in words is "forty million, six hundred thirty-four thousand, four hundred one".