40002988 has 6 divisors (see below), whose sum is σ = 70005236. Its totient is φ = 20001492.

The previous prime is 40002983. The next prime is 40003001. The reversal of 40002988 is 88920004.

It is not an unprimeable number, because it can be changed into a prime (40002983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000370 + ... + 5000377.

Almost surely, 2^40002988 is an apocalyptic number.

It is an amenable number.

40002988 is a deficient number, since it is larger than the sum of its proper divisors (30002248).

40002988 is a wasteful number, since it uses less digits than its factorization.

40002988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000751 (or 10000749 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 40002988 is about 6324.7915380667. The cubic root of 40002988 is about 342.0037048035.

The spelling of 40002988 in words is "forty million, two thousand, nine hundred eighty-eight".