40879545 has 64 divisors (see below), whose sum is σ = 81346560. Its totient is φ = 17107200.

The previous prime is 40879529. The next prime is 40879547. The reversal of 40879545 is 54597804.

It is not a de Polignac number, because 40879545 - 2⁴ = 40879529 is a prime.

It is a super-2 number, since 2×40879545² = 3342274398814050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 40879497 and 40879506.

It is not an unprimeable number, because it can be changed into a prime (40879547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61515 + ... + 62175.

It is an arithmetic number, because the mean of its divisors is an integer number (1271040).

Almost surely, 2^40879545 is an apocalyptic number.

It is an amenable number.

40879545 is a deficient number, since it is larger than the sum of its proper divisors (40467015).

40879545 is a wasteful number, since it uses less digits than its factorization.

40879545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 40879545 is about 6393.7113635196. The cubic root of 40879545 is about 344.4837057994.

The spelling of 40879545 in words is "forty million, eight hundred seventy-nine thousand, five hundred forty-five".