40491149 has 8 divisors (see below), whose sum is σ = 41572608. Its totient is φ = 39414240.

The previous prime is 40491119. The next prime is 40491167. The reversal of 40491149 is 94119404.

40491149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40491149 - 2⁸ = 40490893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40491119) 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 7 ways as a sum of consecutive naturals, for example, 24074 + ... + 25700.

It is an arithmetic number, because the mean of its divisors is an integer number (5196576).

Almost surely, 2^40491149 is an apocalyptic number.

It is an amenable number.

40491149 is a deficient number, since it is larger than the sum of its proper divisors (1081459).

40491149 is a wasteful number, since it uses less digits than its factorization.

40491149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 40491149 is about 6363.2655924454. The cubic root of 40491149 is about 343.3892539909.

The spelling of 40491149 in words is "forty million, four hundred ninety-one thousand, one hundred forty-nine".