40639874 has 8 divisors (see below), whose sum is σ = 66501648. Its totient is φ = 18472660.

The previous prime is 40639867. The next prime is 40639883. The reversal of 40639874 is 47893604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923612 + ... + 923655.

It is an arithmetic number, because the mean of its divisors is an integer number (8312706).

Almost surely, 2^40639874 is an apocalyptic number.

40639874 is a deficient number, since it is larger than the sum of its proper divisors (25861774).

40639874 is a wasteful number, since it uses less digits than its factorization.

40639874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847280.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 40639874 is about 6374.9410977671. The cubic root of 40639874 is about 343.8091660582.

The spelling of 40639874 in words is "forty million, six hundred thirty-nine thousand, eight hundred seventy-four".