99581954 has 8 divisors (see below), whose sum is σ = 158159628. Its totient is φ = 46862080.

The previous prime is 99581947. The next prime is 99581987. The reversal of 99581954 is 45918599.

It can be written as a sum of positive squares in 2 ways, for example, as 87142225 + 12439729 = 9335^2 + 3527^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1464407 + ... + 1464474.

Almost surely, 2^99581954 is an apocalyptic number.

99581954 is a deficient number, since it is larger than the sum of its proper divisors (58577674).

99581954 is a wasteful number, since it uses less digits than its factorization.

99581954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928900.

The product of its digits is 583200, while the sum is 50.

The square root of 99581954 is about 9979.0758089114. The cubic root of 99581954 is about 463.5111807409.

The spelling of 99581954 in words is "ninety-nine million, five hundred eighty-one thousand, nine hundred fifty-four".