40102989 has 8 divisors (see below), whose sum is σ = 53582400. Its totient is φ = 26679456.

The previous prime is 40102973. The next prime is 40102999. The reversal of 40102989 is 98920104.

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

It is not a de Polignac number, because 40102989 - 2⁴ = 40102973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102999) 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, 12264 + ... + 15185.

It is an arithmetic number, because the mean of its divisors is an integer number (6697800).

Almost surely, 2^40102989 is an apocalyptic number.

It is an amenable number.

40102989 is a deficient number, since it is larger than the sum of its proper divisors (13479411).

40102989 is a wasteful number, since it uses less digits than its factorization.

40102989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27939.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 40102989 is about 6332.6920815716. The cubic root of 40102989 is about 342.2884523099.

The spelling of 40102989 in words is "forty million, one hundred two thousand, nine hundred eighty-nine".