79940435 has 4 divisors (see below), whose sum is σ = 95928528. Its totient is φ = 63952344.

The previous prime is 79940431. The next prime is 79940473. The reversal of 79940435 is 53404997.

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 79940435 - 2² = 79940431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79940392 and 79940401.

It is not an unprimeable number, because it can be changed into a prime (79940431) 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, 7994039 + ... + 7994048.

It is an arithmetic number, because the mean of its divisors is an integer number (23982132).

Almost surely, 2^79940435 is an apocalyptic number.

79940435 is a deficient number, since it is larger than the sum of its proper divisors (15988093).

79940435 is a wasteful number, since it uses less digits than its factorization.

79940435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15988092.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 79940435 is about 8940.9415052331. The cubic root of 79940435 is about 430.7799707021.

The spelling of 79940435 in words is "seventy-nine million, nine hundred forty thousand, four hundred thirty-five".