79001940 has 24 divisors (see below), whose sum is σ = 221205600. Its totient is φ = 21067168.

The previous prime is 79001933. The next prime is 79001947. The reversal of 79001940 is 4910097.

It is an interprime number because it is at equal distance from previous prime (79001933) and next prime (79001947).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 79001898 and 79001907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79001947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658290 + ... + 658409.

It is an arithmetic number, because the mean of its divisors is an integer number (9216900).

Almost surely, 2^79001940 is an apocalyptic number.

It is an amenable number.

79001940 is an abundant number, since it is smaller than the sum of its proper divisors (142203660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79001940 is a wasteful number, since it uses less digits than its factorization.

79001940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316711 (or 1316709 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 79001940 is about 8888.3035501720. The cubic root of 79001940 is about 429.0875550074.

The spelling of 79001940 in words is "seventy-nine million, one thousand, nine hundred forty".