99451400 has 24 divisors (see below), whose sum is σ = 231224970. Its totient is φ = 39780480.

The previous prime is 99451399. The next prime is 99451409. The reversal of 99451400 is 415499.

It can be written as a sum of positive squares in 3 ways, for example, as 42328036 + 57123364 = 6506^2 + 7558^2 .

It is not an unprimeable number, because it can be changed into a prime (99451409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248429 + ... + 248828.

Almost surely, 2^99451400 is an apocalyptic number.

It is an amenable number.

99451400 is an abundant number, since it is smaller than the sum of its proper divisors (131773570).

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

99451400 is a wasteful number, since it uses less digits than its factorization.

99451400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497273 (or 497264 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 99451400 is about 9972.5322762075. The cubic root of 99451400 is about 463.3085345778.

Adding to 99451400 its reverse (415499), we get a palindrome (99866899).

The spelling of 99451400 in words is "ninety-nine million, four hundred fifty-one thousand, four hundred".