99995961 has 16 divisors (see below), whose sum is σ = 144193280. Its totient is φ = 61274880.

The previous prime is 99995957. The next prime is 99995983. The reversal of 99995961 is 16959999.

It is not a de Polignac number, because 99995961 - 2² = 99995957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99995261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4080 + ... + 14718.

It is an arithmetic number, because the mean of its divisors is an integer number (9012080).

Almost surely, 2^99995961 is an apocalyptic number.

It is an amenable number.

99995961 is a deficient number, since it is larger than the sum of its proper divisors (44197319).

99995961 is a wasteful number, since it uses less digits than its factorization.

99995961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10896.

The product of its digits is 1771470, while the sum is 57.

The square root of 99995961 is about 9999.7980479608. The cubic root of 99995961 is about 464.1526341514.

The spelling of 99995961 in words is "ninety-nine million, nine hundred ninety-five thousand, nine hundred sixty-one".