40427259 has 4 divisors (see below), whose sum is σ = 53903016. Its totient is φ = 26951504.

The previous prime is 40427249. The next prime is 40427263. The reversal of 40427259 is 95272404.

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 40427259 - 2⁴ = 40427243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40427239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6737874 + ... + 6737879.

It is an arithmetic number, because the mean of its divisors is an integer number (13475754).

Almost surely, 2^40427259 is an apocalyptic number.

40427259 is a deficient number, since it is larger than the sum of its proper divisors (13475757).

40427259 is a wasteful number, since it uses less digits than its factorization.

40427259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13475756.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40427259 is about 6358.2433894905. The cubic root of 40427259 is about 343.2085503953.

The spelling of 40427259 in words is "forty million, four hundred twenty-seven thousand, two hundred fifty-nine".