40197982 has 8 divisors (see below), whose sum is σ = 65778552. Its totient is φ = 18271800.

The previous prime is 40197967. The next prime is 40198003. The reversal of 40197982 is 28979104.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913569 + ... + 913612.

It is an arithmetic number, because the mean of its divisors is an integer number (8222319).

Almost surely, 2^40197982 is an apocalyptic number.

40197982 is a deficient number, since it is larger than the sum of its proper divisors (25580570).

40197982 is a wasteful number, since it uses less digits than its factorization.

40197982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827194.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 40197982 is about 6340.1878521066. The cubic root of 40197982 is about 342.5585017372.

The spelling of 40197982 in words is "forty million, one hundred ninety-seven thousand, nine hundred eighty-two".