79009429 has 4 divisors (see below), whose sum is σ = 83167840. Its totient is φ = 74851020.

The previous prime is 79009423. The next prime is 79009451. The reversal of 79009429 is 92490097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79009429 - 2¹⁷ = 78878357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79009391 and 79009400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79009423) 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, 2079177 + ... + 2079214.

It is an arithmetic number, because the mean of its divisors is an integer number (20791960).

Almost surely, 2^79009429 is an apocalyptic number.

It is an amenable number.

79009429 is a deficient number, since it is larger than the sum of its proper divisors (4158411).

79009429 is a wasteful number, since it uses less digits than its factorization.

79009429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158410.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 79009429 is about 8888.7248241804. The cubic root of 79009429 is about 429.1011130507.

The spelling of 79009429 in words is "seventy-nine million, nine thousand, four hundred twenty-nine".