40349147 has 4 divisors (see below), whose sum is σ = 40384776. Its totient is φ = 40313520.

The previous prime is 40349137. The next prime is 40349149. The reversal of 40349147 is 74194304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40349147 - 2⁴ = 40349131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40349149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16058 + ... + 18399.

It is an arithmetic number, because the mean of its divisors is an integer number (10096194).

Almost surely, 2^40349147 is an apocalyptic number.

40349147 is a deficient number, since it is larger than the sum of its proper divisors (35629).

40349147 is a wasteful number, since it uses less digits than its factorization.

40349147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35628.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40349147 is about 6352.0978424454. The cubic root of 40349147 is about 342.9873630763.

The spelling of 40349147 in words is "forty million, three hundred forty-nine thousand, one hundred forty-seven".