99783940 has 24 divisors (see below), whose sum is σ = 209827800. Its totient is φ = 39859968.

The previous prime is 99783923. The next prime is 99783989. The reversal of 99783940 is 4938799.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 99680256 = 322^2 + 9984^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 14136 + ... + 19984.

It is an arithmetic number, because the mean of its divisors is an integer number (8742825).

Almost surely, 2^99783940 is an apocalyptic number.

It is an amenable number.

99783940 is an abundant number, since it is smaller than the sum of its proper divisors (110043860).

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

99783940 is a wasteful number, since it uses less digits than its factorization.

99783940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711 (or 6709 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 99783940 is about 9989.1911584472. The cubic root of 99783940 is about 463.8243550904.

The spelling of 99783940 in words is "ninety-nine million, seven hundred eighty-three thousand, nine hundred forty".