989912734 has 4 divisors (see below), whose sum is σ = 1484869104. Its totient is φ = 494956366.

The previous prime is 989912713. The next prime is 989912779. The reversal of 989912734 is 437219989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437219989 = 1459 ⋅299671.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247478182 + ... + 247478185.

It is an arithmetic number, because the mean of its divisors is an integer number (371217276).

Almost surely, 2^989912734 is an apocalyptic number.

989912734 is a deficient number, since it is larger than the sum of its proper divisors (494956370).

989912734 is a wasteful number, since it uses less digits than its factorization.

989912734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494956369.

The product of its digits is 979776, while the sum is 52.

The square root of 989912734 is about 31462.8786667717. The cubic root of 989912734 is about 996.6262083305.

The spelling of 989912734 in words is "nine hundred eighty-nine million, nine hundred twelve thousand, seven hundred thirty-four".