40712149 has 4 divisors (see below), whose sum is σ = 40937260. Its totient is φ = 40487040.

The previous prime is 40712131. The next prime is 40712159. The reversal of 40712149 is 94121704.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7879249 + 32832900 = 2807^2 + 5730^2 .

It is a cyclic number.

It is not a de Polignac number, because 40712149 - 2⁹ = 40711637 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 (40712129) 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, 112284 + ... + 112645.

It is an arithmetic number, because the mean of its divisors is an integer number (10234315).

Almost surely, 2^40712149 is an apocalyptic number.

It is an amenable number.

40712149 is a deficient number, since it is larger than the sum of its proper divisors (225111).

40712149 is a wasteful number, since it uses less digits than its factorization.

40712149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225110.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 40712149 is about 6380.6072595012. The cubic root of 40712149 is about 344.0128583845.

The spelling of 40712149 in words is "forty million, seven hundred twelve thousand, one hundred forty-nine".