40787998 has 16 divisors (see below), whose sum is σ = 65882160. Its totient is φ = 18868096.

The previous prime is 40787983. The next prime is 40788001. The reversal of 40787998 is 89978704.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8161 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (4117635).

Almost surely, 2^40787998 is an apocalyptic number.

40787998 is a deficient number, since it is larger than the sum of its proper divisors (25094162).

40787998 is a wasteful number, since it uses less digits than its factorization.

40787998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20411.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 40787998 is about 6386.5482069738. The cubic root of 40787998 is about 344.2263642170.

The spelling of 40787998 in words is "forty million, seven hundred eighty-seven thousand, nine hundred ninety-eight".