899942761 has 8 divisors (see below), whose sum is σ = 934161480. Its totient is φ = 865936512.

The previous prime is 899942737. The next prime is 899942773. The reversal of 899942761 is 167249998.

It can be written as a sum of positive squares in 4 ways, for example, as 404613225 + 495329536 = 20115^2 + 22256^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 899942761 - 2⁹ = 899942249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899942731) 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, 44460 + ... + 61453.

It is an arithmetic number, because the mean of its divisors is an integer number (116770185).

Almost surely, 2^899942761 is an apocalyptic number.

It is an amenable number.

899942761 is a deficient number, since it is larger than the sum of its proper divisors (34218719).

899942761 is a wasteful number, since it uses less digits than its factorization.

899942761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106235.

The product of its digits is 1959552, while the sum is 55.

The square root of 899942761 is about 29999.0460014981. The cubic root of 899942761 is about 965.4689161543.

The spelling of 899942761 in words is "eight hundred ninety-nine million, nine hundred forty-two thousand, seven hundred sixty-one".