899749401 has 4 divisors (see below), whose sum is σ = 1199665872. Its totient is φ = 599832932.

The previous prime is 899749379. The next prime is 899749439. The reversal of 899749401 is 104947998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 899749401 - 2⁶ = 899749337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (899749471) 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 3 ways as a sum of consecutive naturals, for example, 149958231 + ... + 149958236.

It is an arithmetic number, because the mean of its divisors is an integer number (299916468).

Almost surely, 2^899749401 is an apocalyptic number.

It is an amenable number.

899749401 is a deficient number, since it is larger than the sum of its proper divisors (299916471).

899749401 is a wasteful number, since it uses less digits than its factorization.

899749401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299916470.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 899749401 is about 29995.8230592194. The cubic root of 899749401 is about 965.3997649263.

The spelling of 899749401 in words is "eight hundred ninety-nine million, seven hundred forty-nine thousand, four hundred one".