40497984 has 42 divisors (see below), whose sum is σ = 116081810. Its totient is φ = 13499136.

The previous prime is 40497983. The next prime is 40498019. The reversal of 40497984 is 48979404.

It can be written as a sum of positive squares in only one way, i.e., 28387584 + 12110400 = 5328^2 + 3480^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40497983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34579 + ... + 35730.

Almost surely, 2^40497984 is an apocalyptic number.

It is an amenable number.

40497984 is an abundant number, since it is smaller than the sum of its proper divisors (75583826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40497984 is a wasteful number, since it uses less digits than its factorization.

40497984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70327 (or 70314 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 40497984 is about 6363.8026367888. The cubic root of 40497984 is about 343.4085745383.

The spelling of 40497984 in words is "forty million, four hundred ninety-seven thousand, nine hundred eighty-four".