79421903 has 8 divisors (see below), whose sum is σ = 88657536. Its totient is φ = 70522200.

The previous prime is 79421887. The next prime is 79421911. The reversal of 79421903 is 30912497.

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 79421903 - 2⁴ = 79421887 is a prime.

It is a super-2 number, since 2×79421903² = 12615677352282818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79421933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83483 + ... + 84428.

It is an arithmetic number, because the mean of its divisors is an integer number (11082192).

Almost surely, 2^79421903 is an apocalyptic number.

79421903 is a deficient number, since it is larger than the sum of its proper divisors (9235633).

79421903 is a wasteful number, since it uses less digits than its factorization.

79421903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167965.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 79421903 is about 8911.8967116995. The cubic root of 79421903 is about 429.8465343824.

The spelling of 79421903 in words is "seventy-nine million, four hundred twenty-one thousand, nine hundred three".