40828279 has 4 divisors (see below), whose sum is σ = 41931784. Its totient is φ = 39724776.

The previous prime is 40828267. The next prime is 40828297. The reversal of 40828279 is 97282804.

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 40828279 - 2⁵ = 40828247 is a prime.

It is a super-2 number, since 2×40828279² = 3333896732203682, 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 (40828219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551697 + ... + 551770.

It is an arithmetic number, because the mean of its divisors is an integer number (10482946).

Almost surely, 2^40828279 is an apocalyptic number.

40828279 is a deficient number, since it is larger than the sum of its proper divisors (1103505).

40828279 is a wasteful number, since it uses less digits than its factorization.

40828279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103504.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 40828279 is about 6389.7010102195. The cubic root of 40828279 is about 344.3396428029.

The spelling of 40828279 in words is "forty million, eight hundred twenty-eight thousand, two hundred seventy-nine".