40992989 has 8 divisors (see below), whose sum is σ = 42251328. Its totient is φ = 39747040.

The previous prime is 40992949. The next prime is 40993063. The reversal of 40992989 is 98929904.

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

It is not a de Polignac number, because 40992989 - 2⁸ = 40992733 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 (40992949) 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, 3854 + ... + 9840.

It is an arithmetic number, because the mean of its divisors is an integer number (5281416).

Almost surely, 2^40992989 is an apocalyptic number.

It is an amenable number.

40992989 is a deficient number, since it is larger than the sum of its proper divisors (1258339).

40992989 is a wasteful number, since it uses less digits than its factorization.

40992989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 40992989 is about 6402.5767469043. The cubic root of 40992989 is about 344.8020680796.

The spelling of 40992989 in words is "forty million, nine hundred ninety-two thousand, nine hundred eighty-nine".