40561079 has 4 divisors (see below), whose sum is σ = 43681176. Its totient is φ = 37440984.

The previous prime is 40561057. The next prime is 40561097. The reversal of 40561079 is 97016504.

It is a happy number.

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 40561079 - 2⁸ = 40560823 is a prime.

It is a super-2 number, since 2×40561079² = 3290402259288482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40561039) 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, 1560029 + ... + 1560054.

It is an arithmetic number, because the mean of its divisors is an integer number (10920294).

Almost surely, 2^40561079 is an apocalyptic number.

40561079 is a deficient number, since it is larger than the sum of its proper divisors (3120097).

40561079 is a wasteful number, since it uses less digits than its factorization.

40561079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120096.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 40561079 is about 6368.7580421932. The cubic root of 40561079 is about 343.5868230927.

The spelling of 40561079 in words is "forty million, five hundred sixty-one thousand, seventy-nine".