99772 has 6 divisors (see below), whose sum is σ = 174608. Its totient is φ = 49884.

The previous prime is 99767. The next prime is 99787. The reversal of 99772 is 27799.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12468 + ... + 12475.

2⁹⁹⁷⁷² is an apocalyptic number.

It is an amenable number.

99772 is a deficient number, since it is larger than the sum of its proper divisors (74836).

99772 is a wasteful number, since it uses less digits than its factorization.

99772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24947 (or 24945 counting only the distinct ones).

The product of its digits is 7938, while the sum is 34.

The square root of 99772 is about 315.8670606442. The cubic root of 99772 is about 46.3805854172.

The spelling of 99772 in words is "ninety-nine thousand, seven hundred seventy-two".