40274991 has 6 divisors (see below), whose sum is σ = 58175000. Its totient is φ = 26849988.

The previous prime is 40274977. The next prime is 40275007. The reversal of 40274991 is 19947204.

40274991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40274991 - 2⁵ = 40274959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40274951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2237491 + ... + 2237508.

Almost surely, 2^40274991 is an apocalyptic number.

40274991 is a deficient number, since it is larger than the sum of its proper divisors (17900009).

40274991 is a wasteful number, since it uses less digits than its factorization.

40274991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475005 (or 4475002 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 40274991 is about 6346.2580313126. The cubic root of 40274991 is about 342.7771135384. Note that the first 3 decimals are identical.

The spelling of 40274991 in words is "forty million, two hundred seventy-four thousand, nine hundred ninety-one".