99277993 has 8 divisors (see below), whose sum is σ = 102578112. Its totient is φ = 96010416.

The previous prime is 99277979. The next prime is 99278033. The reversal of 99277993 is 39977299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99277993 - 2²¹ = 97180841 is a prime.

It is a super-2 number, since 2×99277993² = 19712239788216098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99277973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855 + ... + 14212.

It is an arithmetic number, because the mean of its divisors is an integer number (12822264).

Almost surely, 2^99277993 is an apocalyptic number.

It is an amenable number.

99277993 is a deficient number, since it is larger than the sum of its proper divisors (3300119).

99277993 is a wasteful number, since it uses less digits than its factorization.

99277993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16271.

The product of its digits is 1928934, while the sum is 55.

The square root of 99277993 is about 9963.8342519333. The cubic root of 99277993 is about 463.0390975012.

The spelling of 99277993 in words is "ninety-nine million, two hundred seventy-seven thousand, nine hundred ninety-three".