40489894 has 8 divisors (see below), whose sum is σ = 60766920. Its totient is φ = 20234256.

The previous prime is 40489859. The next prime is 40489957. The reversal of 40489894 is 49898404.

It is a happy number.

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

It is a super-2 number, since 2×40489894² = 3278863032262472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802 + ... + 9034.

It is an arithmetic number, because the mean of its divisors is an integer number (7595865).

Almost surely, 2^40489894 is an apocalyptic number.

40489894 is a deficient number, since it is larger than the sum of its proper divisors (20277026).

40489894 is a wasteful number, since it uses less digits than its factorization.

40489894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 40489894 is about 6363.1669787929. The cubic root of 40489894 is about 343.3857062364.

The spelling of 40489894 in words is "forty million, four hundred eighty-nine thousand, eight hundred ninety-four".