899942487 has 8 divisors (see below), whose sum is σ = 1200087936. Its totient is φ = 599879352.

The previous prime is 899942479. The next prime is 899942489. The reversal of 899942487 is 784249998.

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

It is not a de Polignac number, because 899942487 - 2³ = 899942479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 899942487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899942489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12558 + ... + 44244.

It is an arithmetic number, because the mean of its divisors is an integer number (150010992).

Almost surely, 2^899942487 is an apocalyptic number.

899942487 is a deficient number, since it is larger than the sum of its proper divisors (300145449).

899942487 is a wasteful number, since it uses less digits than its factorization.

899942487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41157.

The product of its digits is 10450944, while the sum is 60.

The square root of 899942487 is about 29999.0414346859. The cubic root of 899942487 is about 965.4688181709.

The spelling of 899942487 in words is "eight hundred ninety-nine million, nine hundred forty-two thousand, four hundred eighty-seven".