99939742 has 32 divisors (see below), whose sum is σ = 179781120. Its totient is φ = 40760160.

The previous prime is 99939703. The next prime is 99939757. The reversal of 99939742 is 24793999.

It is a self number, because there is not a number n which added to its sum of digits gives 99939742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27093 + ... + 30559.

It is an arithmetic number, because the mean of its divisors is an integer number (5618160).

Almost surely, 2^99939742 is an apocalyptic number.

99939742 is a deficient number, since it is larger than the sum of its proper divisors (79841378).

99939742 is a wasteful number, since it uses less digits than its factorization.

99939742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576.

The product of its digits is 1102248, while the sum is 52.

The square root of 99939742 is about 9996.9866459849. The cubic root of 99939742 is about 464.0656336753.

The spelling of 99939742 in words is "ninety-nine million, nine hundred thirty-nine thousand, seven hundred forty-two".