40091258 has 4 divisors (see below), whose sum is σ = 60136890. Its totient is φ = 20045628.

The previous prime is 40091257. The next prime is 40091279. The reversal of 40091258 is 85219004.

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

It can be written as a sum of positive squares in only one way, i.e., 26863489 + 13227769 = 5183^2 + 3637^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40091258.

It is not an unprimeable number, because it can be changed into a prime (40091251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022813 + ... + 10022816.

Almost surely, 2^40091258 is an apocalyptic number.

40091258 is a deficient number, since it is larger than the sum of its proper divisors (20045632).

40091258 is a wasteful number, since it uses less digits than its factorization.

40091258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045631.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 40091258 is about 6331.7657884669. The cubic root of 40091258 is about 342.2550734395.

The spelling of 40091258 in words is "forty million, ninety-one thousand, two hundred fifty-eight".