991239482 has 8 divisors (see below), whose sum is σ = 1487175552. Its totient is φ = 495514300.

The previous prime is 991239461. The next prime is 991239511. The reversal of 991239482 is 284932199.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40394 + ... + 60117.

It is an arithmetic number, because the mean of its divisors is an integer number (185896944).

Almost surely, 2^991239482 is an apocalyptic number.

991239482 is a deficient number, since it is larger than the sum of its proper divisors (495936070).

991239482 is a wasteful number, since it uses less digits than its factorization.

991239482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105444.

The product of its digits is 279936, while the sum is 47.

The square root of 991239482 is about 31483.9559458464. The cubic root of 991239482 is about 997.0712581785.

It can be divided in two parts, 9912 and 39482, that added together give a palindrome (49394).

The spelling of 991239482 in words is "nine hundred ninety-one million, two hundred thirty-nine thousand, four hundred eighty-two".