40519394 has 8 divisors (see below), whose sum is σ = 61223148. Its totient is φ = 20111680.

The previous prime is 40519393. The next prime is 40519397. The reversal of 40519394 is 49391504.

It can be written as a sum of positive squares in 2 ways, for example, as 37368769 + 3150625 = 6113^2 + 1775^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40519393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73667 + ... + 74214.

Almost surely, 2^40519394 is an apocalyptic number.

40519394 is a deficient number, since it is larger than the sum of its proper divisors (20703754).

40519394 is a wasteful number, since it uses less digits than its factorization.

40519394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148020.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 40519394 is about 6365.4845848529. The cubic root of 40519394 is about 343.4690802852.

The spelling of 40519394 in words is "forty million, five hundred nineteen thousand, three hundred ninety-four".