40019146 has 8 divisors (see below), whose sum is σ = 60103620. Its totient is φ = 19984608.

The previous prime is 40019141. The next prime is 40019179. The reversal of 40019146 is 64191004.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 819025 = 6261^2 + 905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40019146.

It is not an unprimeable number, because it can be changed into a prime (40019141) 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 3 ways as a sum of consecutive naturals, for example, 10411 + ... + 13726.

Almost surely, 2^40019146 is an apocalyptic number.

40019146 is a deficient number, since it is larger than the sum of its proper divisors (20084474).

40019146 is a wasteful number, since it uses less digits than its factorization.

40019146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40019146 is about 6326.0687634581. The cubic root of 40019146 is about 342.0497459642.

The spelling of 40019146 in words is "forty million, nineteen thousand, one hundred forty-six".