899972471 has 4 divisors (see below), whose sum is σ = 901364112. Its totient is φ = 898580832.

The previous prime is 899972459. The next prime is 899972477. The reversal of 899972471 is 174279998.

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

It is a cyclic number.

It is not a de Polignac number, because 899972471 - 2²² = 895778167 is a prime.

It is a super-3 number, since 3×899972471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899972477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694850 + ... + 696143.

It is an arithmetic number, because the mean of its divisors is an integer number (225341028).

Almost surely, 2^899972471 is an apocalyptic number.

899972471 is a deficient number, since it is larger than the sum of its proper divisors (1391641).

899972471 is a wasteful number, since it uses less digits than its factorization.

899972471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391640.

The product of its digits is 2286144, while the sum is 56.

The square root of 899972471 is about 29999.5411798247. The cubic root of 899972471 is about 965.4795404470.

The spelling of 899972471 in words is "eight hundred ninety-nine million, nine hundred seventy-two thousand, four hundred seventy-one".