40667149 has 4 divisors (see below), whose sum is σ = 40715136. Its totient is φ = 40619164.

The previous prime is 40667141. The next prime is 40667171. The reversal of 40667149 is 94176604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40667149 - 2³ = 40667141 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 (40667141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22699 + ... + 24424.

It is an arithmetic number, because the mean of its divisors is an integer number (10178784).

Almost surely, 2^40667149 is an apocalyptic number.

It is an amenable number.

40667149 is a deficient number, since it is larger than the sum of its proper divisors (47987).

40667149 is an equidigital number, since it uses as much as digits as its factorization.

40667149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47986.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40667149 is about 6377.0799744083. The cubic root of 40667149 is about 343.8860634254.

The spelling of 40667149 in words is "forty million, six hundred sixty-seven thousand, one hundred forty-nine".