79489903 has 4 divisors (see below), whose sum is σ = 79520760. Its totient is φ = 79459048.

The previous prime is 79489853. The next prime is 79489931. The reversal of 79489903 is 30998497.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79489903 - 2⁹ = 79489391 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 (79489973) 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, 11173 + ... + 16846.

It is an arithmetic number, because the mean of its divisors is an integer number (19880190).

Almost surely, 2^79489903 is an apocalyptic number.

79489903 is a deficient number, since it is larger than the sum of its proper divisors (30857).

79489903 is a wasteful number, since it uses less digits than its factorization.

79489903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30856.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 79489903 is about 8915.7110204403. The cubic root of 79489903 is about 429.9691757245.

The spelling of 79489903 in words is "seventy-nine million, four hundred eighty-nine thousand, nine hundred three".