899449471 has 4 divisors (see below), whose sum is σ = 930465000. Its totient is φ = 868433944.

The previous prime is 899449429. The next prime is 899449501. The reversal of 899449471 is 174944998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899449471 is a prime.

It is a super-3 number, since 3×899449471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899449871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15507721 + ... + 15507778.

It is an arithmetic number, because the mean of its divisors is an integer number (232616250).

Almost surely, 2^899449471 is an apocalyptic number.

899449471 is a deficient number, since it is larger than the sum of its proper divisors (31015529).

899449471 is a wasteful number, since it uses less digits than its factorization.

899449471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31015528.

The product of its digits is 2612736, while the sum is 55.

The square root of 899449471 is about 29990.8231130791. The cubic root of 899449471 is about 965.2924815238.

The spelling of 899449471 in words is "eight hundred ninety-nine million, four hundred forty-nine thousand, four hundred seventy-one".