989225949 has 4 divisors (see below), whose sum is σ = 1318967936. Its totient is φ = 659483964.

The previous prime is 989225947. The next prime is 989225953. The reversal of 989225949 is 949522989.

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 not a de Polignac number, because 989225949 - 2¹ = 989225947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989225947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164870989 + ... + 164870994.

It is an arithmetic number, because the mean of its divisors is an integer number (329741984).

Almost surely, 2^989225949 is an apocalyptic number.

It is an amenable number.

989225949 is a deficient number, since it is larger than the sum of its proper divisors (329741987).

989225949 is a wasteful number, since it uses less digits than its factorization.

989225949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329741986.

The product of its digits is 4199040, while the sum is 57.

The square root of 989225949 is about 31451.9625619770. The cubic root of 989225949 is about 996.3956741097.

The spelling of 989225949 in words is "nine hundred eighty-nine million, two hundred twenty-five thousand, nine hundred forty-nine".