99400005 has 12 divisors (see below), whose sum is σ = 172293420. Its totient is φ = 53013312.

The previous prime is 99399983. The next prime is 99400009. The reversal of 99400005 is 50000499.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34468641 + 64931364 = 5871^2 + 8058^2 .

It is not a de Polignac number, because 99400005 - 2⁵ = 99399973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99400009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1104400 + ... + 1104489.

It is an arithmetic number, because the mean of its divisors is an integer number (14357785).

Almost surely, 2^99400005 is an apocalyptic number.

It is an amenable number.

99400005 is a deficient number, since it is larger than the sum of its proper divisors (72893415).

99400005 is a wasteful number, since it uses less digits than its factorization.

99400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208900 (or 2208897 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 99400005 is about 9969.9551152450. The cubic root of 99400005 is about 463.2287105125.

The spelling of 99400005 in words is "ninety-nine million, four hundred thousand, five".