989632495 has 8 divisors (see below), whose sum is σ = 1194845616. Its totient is φ = 786848256.

The previous prime is 989632493. The next prime is 989632513. The reversal of 989632495 is 594236989.

It is a happy number.

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 989632495 - 2¹ = 989632493 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 (989632493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606322 + ... + 607951.

It is an arithmetic number, because the mean of its divisors is an integer number (149355702).

Almost surely, 2^989632495 is an apocalyptic number.

989632495 is a deficient number, since it is larger than the sum of its proper divisors (205213121).

989632495 is a wasteful number, since it uses less digits than its factorization.

989632495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214441.

The product of its digits is 4199040, while the sum is 55.

The square root of 989632495 is about 31458.4248652090. The cubic root of 989632495 is about 996.5321529382.

The spelling of 989632495 in words is "nine hundred eighty-nine million, six hundred thirty-two thousand, four hundred ninety-five".