40490889 has 8 divisors (see below), whose sum is σ = 57163680. Its totient is φ = 25406016.

The previous prime is 40490861. The next prime is 40490893. The reversal of 40490889 is 98809404.

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

It is not a de Polignac number, because 40490889 - 2¹² = 40486793 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40490889.

It is not an unprimeable number, because it can be changed into a prime (40490809) 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, 396919 + ... + 397020.

It is an arithmetic number, because the mean of its divisors is an integer number (7145460).

Almost surely, 2^40490889 is an apocalyptic number.

It is an amenable number.

40490889 is a deficient number, since it is larger than the sum of its proper divisors (16672791).

40490889 is a wasteful number, since it uses less digits than its factorization.

40490889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793959.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 40490889 is about 6363.2451626509. The cubic root of 40490889 is about 343.3885190039.

The spelling of 40490889 in words is "forty million, four hundred ninety thousand, eight hundred eighty-nine".