99471890 has 16 divisors (see below), whose sum is σ = 204628032. Its totient is φ = 34104624.

The previous prime is 99471877. The next prime is 99471899. The reversal of 99471890 is 9817499.

It is not an unprimeable number, because it can be changed into a prime (99471899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710444 + ... + 710583.

It is an arithmetic number, because the mean of its divisors is an integer number (12789252).

Almost surely, 2^99471890 is an apocalyptic number.

99471890 is an abundant number, since it is smaller than the sum of its proper divisors (105156142).

99471890 is a wasteful number, since it uses less digits than its factorization.

99471890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421041.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 99471890 is about 9973.5595451173. The cubic root of 99471890 is about 463.3403509222.

The spelling of 99471890 in words is "ninety-nine million, four hundred seventy-one thousand, eight hundred ninety".