40437146 has 4 divisors (see below), whose sum is σ = 60655722. Its totient is φ = 20218572.

The previous prime is 40437143. The next prime is 40437179. The reversal of 40437146 is 64173404.

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

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 13801225 = 5161^2 + 3715^2 .

It is not an unprimeable number, because it can be changed into a prime (40437143) 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 as a sum of consecutive naturals, namely, 10109285 + ... + 10109288.

Almost surely, 2^40437146 is an apocalyptic number.

40437146 is a deficient number, since it is larger than the sum of its proper divisors (20218576).

40437146 is a wasteful number, since it uses less digits than its factorization.

40437146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20218575.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40437146 is about 6359.0208365754. The cubic root of 40437146 is about 343.2365267857.

The spelling of 40437146 in words is "forty million, four hundred thirty-seven thousand, one hundred forty-six".