40259845 has 4 divisors (see below), whose sum is σ = 48311820. Its totient is φ = 32207872.

The previous prime is 40259839. The next prime is 40259851. The reversal of 40259845 is 54895204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40259839) and next prime (40259851).

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 21372129 = 4346^2 + 4623^2 .

It is a cyclic number.

It is not a de Polignac number, because 40259845 - 2⁹ = 40259333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025980 + ... + 4025989.

It is an arithmetic number, because the mean of its divisors is an integer number (12077955).

Almost surely, 2^40259845 is an apocalyptic number.

It is an amenable number.

40259845 is a deficient number, since it is larger than the sum of its proper divisors (8051975).

40259845 is an equidigital number, since it uses as much as digits as its factorization.

40259845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8051974.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 40259845 is about 6345.0646174803. The cubic root of 40259845 is about 342.7341393669.

The spelling of 40259845 in words is "forty million, two hundred fifty-nine thousand, eight hundred forty-five".