989503642 has 8 divisors (see below), whose sum is σ = 1484410356. Its totient is φ = 494700192.

The previous prime is 989503633. The next prime is 989503661. The reversal of 989503642 is 246305989.

It can be written as a sum of positive squares in 2 ways, for example, as 986650921 + 2852721 = 31411^2 + 1689^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 989503592 and 989503601.

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, 5968 + ... + 44884.

Almost surely, 2^989503642 is an apocalyptic number.

989503642 is a deficient number, since it is larger than the sum of its proper divisors (494906714).

989503642 is a wasteful number, since it uses less digits than its factorization.

989503642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51632.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 989503642 is about 31456.3768097980. The cubic root of 989503642 is about 996.4889006091.

The spelling of 989503642 in words is "nine hundred eighty-nine million, five hundred three thousand, six hundred forty-two".