99995970 has 16 divisors (see below), whose sum is σ = 239990400. Its totient is φ = 26665584.

The previous prime is 99995957. The next prime is 99995983. The reversal of 99995970 is 7959999.

It is an interprime number because it is at equal distance from previous prime (99995957) and next prime (99995983).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99995970.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666570 + ... + 1666629.

It is an arithmetic number, because the mean of its divisors is an integer number (14999400).

Almost surely, 2^99995970 is an apocalyptic number.

99995970 is an abundant number, since it is smaller than the sum of its proper divisors (139994430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99995970 is a wasteful number, since it uses less digits than its factorization.

99995970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333209.

The product of its (nonzero) digits is 2066715, while the sum is 57.

The square root of 99995970 is about 9999.7984979698. The cubic root of 99995970 is about 464.1526480765.

It can be divided in two parts, 999 and 95970, that added together give a palindrome (96969).

The spelling of 99995970 in words is "ninety-nine million, nine hundred ninety-five thousand, nine hundred seventy".