40401634 has 16 divisors (see below), whose sum is σ = 74587968. Its totient is φ = 15982992.

The previous prime is 40401617. The next prime is 40401643. The reversal of 40401634 is 43610404.

It is a happy number.

40401634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 110812 + ... + 111175.

It is an arithmetic number, because the mean of its divisors is an integer number (4661748).

Almost surely, 2^40401634 is an apocalyptic number.

40401634 is a deficient number, since it is larger than the sum of its proper divisors (34186334).

40401634 is a wasteful number, since it uses less digits than its factorization.

40401634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222009.

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

The square root of 40401634 is about 6356.2279694800. The cubic root of 40401634 is about 343.1360203073.

The spelling of 40401634 in words is "forty million, four hundred one thousand, six hundred thirty-four".