40828423 has 4 divisors (see below), whose sum is σ = 40841208. Its totient is φ = 40815640.

The previous prime is 40828421. The next prime is 40828429. The reversal of 40828423 is 32482804.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40828423 - 2¹ = 40828421 is a prime.

It is a super-3 number, since 3×40828423³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40828421) 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, 2940 + ... + 9502.

It is an arithmetic number, because the mean of its divisors is an integer number (10210302).

Almost surely, 2^40828423 is an apocalyptic number.

40828423 is a deficient number, since it is larger than the sum of its proper divisors (12785).

40828423 is an equidigital number, since it uses as much as digits as its factorization.

40828423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 40828423 is about 6389.7122783424. The cubic root of 40828423 is about 344.3400476272.

The spelling of 40828423 in words is "forty million, eight hundred twenty-eight thousand, four hundred twenty-three".