40190889 has 8 divisors (see below), whose sum is σ = 53711680. Its totient is φ = 26732016.

The previous prime is 40190879. The next prime is 40190903. The reversal of 40190889 is 98809104.

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

It is not a de Polignac number, because 40190889 - 2¹⁵ = 40158121 is a prime.

It is a super-2 number, since 2×40190889² = 3230615117220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40190819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13942 + ... + 16575.

It is an arithmetic number, because the mean of its divisors is an integer number (6713960).

Almost surely, 2^40190889 is an apocalyptic number.

It is an amenable number.

40190889 is a deficient number, since it is larger than the sum of its proper divisors (13520791).

40190889 is a wasteful number, since it uses less digits than its factorization.

40190889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30959.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 40190889 is about 6339.6284591449. The cubic root of 40190889 is about 342.5383522151.

The spelling of 40190889 in words is "forty million, one hundred ninety thousand, eight hundred eighty-nine".