40747149 has 12 divisors (see below), whose sum is σ = 58943196. Its totient is φ = 27124992.

The previous prime is 40747141. The next prime is 40747159. The reversal of 40747149 is 94174704.

It can be written as a sum of positive squares in 2 ways, for example, as 20766249 + 19980900 = 4557^2 + 4470^2 .

It is not a de Polignac number, because 40747149 - 2³ = 40747141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40747141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4029 + ... + 9885.

It is an arithmetic number, because the mean of its divisors is an integer number (4911933).

Almost surely, 2^40747149 is an apocalyptic number.

It is an amenable number.

40747149 is a deficient number, since it is larger than the sum of its proper divisors (18196047).

40747149 is a wasteful number, since it uses less digits than its factorization.

40747149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636 (or 6633 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 40747149 is about 6383.3493559416. The cubic root of 40747149 is about 344.1114121055. Note that the first 3 decimals are identical.

The spelling of 40747149 in words is "forty million, seven hundred forty-seven thousand, one hundred forty-nine".