40046149 has 16 divisors (see below), whose sum is σ = 47323584. Its totient is φ = 33408000.

The previous prime is 40046131. The next prime is 40046161. The reversal of 40046149 is 94164004.

It is a cyclic number.

It is not a de Polignac number, because 40046149 - 2⁹ = 40045637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40046119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26874 + ... + 28324.

It is an arithmetic number, because the mean of its divisors is an integer number (2957724).

Almost surely, 2^40046149 is an apocalyptic number.

It is an amenable number.

40046149 is a deficient number, since it is larger than the sum of its proper divisors (7277435).

40046149 is a wasteful number, since it uses less digits than its factorization.

40046149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40046149 is about 6328.2026674246. The cubic root of 40046149 is about 342.1266615873.

It can be divided in two parts, 4004 and 6149, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 40046149 in words is "forty million, forty-six thousand, one hundred forty-nine".