40579081 has 4 divisors (see below), whose sum is σ = 40673664. Its totient is φ = 40484500.

The previous prime is 40579069. The next prime is 40579103. The reversal of 40579081 is 18097504.

It is a happy number.

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 40579081 - 2¹³ = 40570889 is a prime.

It is a super-2 number, since 2×40579081² = 3293323629609122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40579481) 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, 46645 + ... + 47506.

It is an arithmetic number, because the mean of its divisors is an integer number (10168416).

Almost surely, 2^40579081 is an apocalyptic number.

It is an amenable number.

40579081 is a deficient number, since it is larger than the sum of its proper divisors (94583).

40579081 is an equidigital number, since it uses as much as digits as its factorization.

40579081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94582.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 40579081 is about 6370.1711907923. The cubic root of 40579081 is about 343.6376463229.

It can be divided in two parts, 40 and 579081, that added together give a square (579121 = 761²).

The spelling of 40579081 in words is "forty million, five hundred seventy-nine thousand, eighty-one".