40987799 has 8 divisors (see below), whose sum is σ = 43565040. Its totient is φ = 38429056.

The previous prime is 40987789. The next prime is 40987811. The reversal of 40987799 is 99778904.

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

It is a cyclic number.

It is not a de Polignac number, because 40987799 - 2⁸ = 40987543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40987799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40987789) 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, 92 + ... + 9054.

It is an arithmetic number, because the mean of its divisors is an integer number (5445630).

Almost surely, 2^40987799 is an apocalyptic number.

40987799 is a deficient number, since it is larger than the sum of its proper divisors (2577241).

40987799 is a wasteful number, since it uses less digits than its factorization.

40987799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 40987799 is about 6402.1714285077. The cubic root of 40987799 is about 344.7875160118.

The spelling of 40987799 in words is "forty million, nine hundred eighty-seven thousand, seven hundred ninety-nine".