99427940 has 12 divisors (see below), whose sum is σ = 208798716. Its totient is φ = 39771168.

The previous prime is 99427927. The next prime is 99427957. The reversal of 99427940 is 4972499.

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 41576704 = 7606^2 + 6448^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99427891 and 99427900.

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, 2485679 + ... + 2485718.

It is an arithmetic number, because the mean of its divisors is an integer number (17399893).

Almost surely, 2^99427940 is an apocalyptic number.

It is an amenable number.

99427940 is an abundant number, since it is smaller than the sum of its proper divisors (109370776).

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

99427940 is a wasteful number, since it uses less digits than its factorization.

99427940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971406 (or 4971404 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 99427940 is about 9971.3559759944. The cubic root of 99427940 is about 463.2721011273.

The spelling of 99427940 in words is "ninety-nine million, four hundred twenty-seven thousand, nine hundred forty".