40460989 has 4 divisors (see below), whose sum is σ = 40516480. Its totient is φ = 40405500.

The previous prime is 40460977. The next prime is 40460999. The reversal of 40460989 is 98906404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40460989 - 2²¹ = 38363837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40460939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26637 + ... + 28114.

It is an arithmetic number, because the mean of its divisors is an integer number (10129120).

Almost surely, 2^40460989 is an apocalyptic number.

It is an amenable number.

40460989 is a deficient number, since it is larger than the sum of its proper divisors (55491).

40460989 is an equidigital number, since it uses as much as digits as its factorization.

40460989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55490.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 40460989 is about 6360.8952986195. The cubic root of 40460989 is about 343.3039745112.

The spelling of 40460989 in words is "forty million, four hundred sixty thousand, nine hundred eighty-nine".