40879497 has 8 divisors (see below), whose sum is σ = 54536544. Its totient is φ = 27237728.

The previous prime is 40879481. The next prime is 40879499. The reversal of 40879497 is 79497804.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40879497 - 2⁴ = 40879481 is a prime.

It is a super-2 number, since 2×40879497² = 3342266549946018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40879499) 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, 6133 + ... + 10925.

It is an arithmetic number, because the mean of its divisors is an integer number (6817068).

Almost surely, 2^40879497 is an apocalyptic number.

It is an amenable number.

40879497 is a deficient number, since it is larger than the sum of its proper divisors (13657047).

40879497 is a wasteful number, since it uses less digits than its factorization.

40879497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 40879497 is about 6393.7076098302. The cubic root of 40879497 is about 344.4835709706.

The spelling of 40879497 in words is "forty million, eight hundred seventy-nine thousand, four hundred ninety-seven".