40779315 has 32 divisors (see below), whose sum is σ = 74050560. Its totient is φ = 21282912.

The previous prime is 40779289. The next prime is 40779317. The reversal of 40779315 is 51397704.

It is a happy number.

It is not a de Polignac number, because 40779315 - 2⁶ = 40779251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40779315.

It is not an unprimeable number, because it can be changed into a prime (40779317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3132 + ... + 9558.

It is an arithmetic number, because the mean of its divisors is an integer number (2314080).

Almost surely, 2^40779315 is an apocalyptic number.

40779315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40779315 is a deficient number, since it is larger than the sum of its proper divisors (33271245).

40779315 is a wasteful number, since it uses less digits than its factorization.

40779315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6488 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 40779315 is about 6385.8683826086. The cubic root of 40779315 is about 344.2019360372.

The spelling of 40779315 in words is "forty million, seven hundred seventy-nine thousand, three hundred fifteen".