40196579 has 4 divisors (see below), whose sum is σ = 40762800. Its totient is φ = 39630360.

The previous prime is 40196573. The next prime is 40196623. The reversal of 40196579 is 97569104.

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 40196579 - 2⁸ = 40196323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40196573) 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, 283004 + ... + 283145.

It is an arithmetic number, because the mean of its divisors is an integer number (10190700).

Almost surely, 2^40196579 is an apocalyptic number.

40196579 is a deficient number, since it is larger than the sum of its proper divisors (566221).

40196579 is an equidigital number, since it uses as much as digits as its factorization.

40196579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566220.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 40196579 is about 6340.0772077318. The cubic root of 40196579 is about 342.5545163367.

The spelling of 40196579 in words is "forty million, one hundred ninety-six thousand, five hundred seventy-nine".