40400894 has 8 divisors (see below), whose sum is σ = 60668568. Its totient is φ = 20178040.

The previous prime is 40400887. The next prime is 40400911. The reversal of 40400894 is 49800404.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8852 + ... + 12615.

It is an arithmetic number, because the mean of its divisors is an integer number (7583571).

Almost surely, 2^40400894 is an apocalyptic number.

40400894 is a deficient number, since it is larger than the sum of its proper divisors (20267674).

40400894 is a wasteful number, since it uses less digits than its factorization.

40400894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22410.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40400894 is about 6356.1697585889. The cubic root of 40400894 is about 343.1339253244.

The spelling of 40400894 in words is "forty million, four hundred thousand, eight hundred ninety-four".