40149971 has 8 divisors (see below), whose sum is σ = 42611904. Its totient is φ = 37699200.

The previous prime is 40149953. The next prime is 40150001. The reversal of 40149971 is 17994104.

40149971 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 not a de Polignac number, because 40149971 - 2¹⁰ = 40148947 is a prime.

It is a super-2 number, since 2×40149971² = 3224040342601682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40149911) 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, 5321 + ... + 10421.

It is an arithmetic number, because the mean of its divisors is an integer number (5326488).

Almost surely, 2^40149971 is an apocalyptic number.

40149971 is a deficient number, since it is larger than the sum of its proper divisors (2461933).

40149971 is a wasteful number, since it uses less digits than its factorization.

40149971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 40149971 is about 6336.4004766113. The cubic root of 40149971 is about 342.4220676221.

The spelling of 40149971 in words is "forty million, one hundred forty-nine thousand, nine hundred seventy-one".