99397771 has 8 divisors (see below), whose sum is σ = 108520704. Its totient is φ = 90289320.

The previous prime is 99397763. The next prime is 99397787. The reversal of 99397771 is 17779399.

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

It is not a de Polignac number, because 99397771 - 2³ = 99397763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99397741) 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, 14866 + ... + 20488.

It is an arithmetic number, because the mean of its divisors is an integer number (13565088).

Almost surely, 2^99397771 is an apocalyptic number.

99397771 is a deficient number, since it is larger than the sum of its proper divisors (9122933).

99397771 is a wasteful number, since it uses less digits than its factorization.

99397771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241.

The product of its digits is 750141, while the sum is 52.

The square root of 99397771 is about 9969.8430780028. The cubic root of 99397771 is about 463.2252401548.

The spelling of 99397771 in words is "ninety-nine million, three hundred ninety-seven thousand, seven hundred seventy-one".