99400995 has 24 divisors (see below), whose sum is σ = 173661696. Its totient is φ = 52593408.

The previous prime is 99400991. The next prime is 99401011. The reversal of 99400995 is 59900499.

It is a happy number.

It is not a de Polignac number, because 99400995 - 2² = 99400991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99400995.

It is not an unprimeable number, because it can be changed into a prime (99400991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2982 + ... + 14411.

It is an arithmetic number, because the mean of its divisors is an integer number (7235904).

Almost surely, 2^99400995 is an apocalyptic number.

99400995 is a deficient number, since it is larger than the sum of its proper divisors (74260701).

99400995 is a wasteful number, since it uses less digits than its factorization.

99400995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531 (or 17528 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 99400995 is about 9970.0047642917. The cubic root of 99400995 is about 463.2302483893.

It can be divided in two parts, 99 and 400995, that multiplied together give a triangular number (39698505 = T₈₉₁₀).

The spelling of 99400995 in words is "ninety-nine million, four hundred thousand, nine hundred ninety-five".