40016519 has 4 divisors (see below), whose sum is σ = 40032720. Its totient is φ = 40000320.

The previous prime is 40016507. The next prime is 40016563. The reversal of 40016519 is 91561004.

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 40016519 - 2¹⁶ = 39950983 is a prime.

It is a super-2 number, since 2×40016519² = 3202643585754722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40016569) 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, 3539 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (10008180).

Almost surely, 2^40016519 is an apocalyptic number.

40016519 is a deficient number, since it is larger than the sum of its proper divisors (16201).

40016519 is a wasteful number, since it uses less digits than its factorization.

40016519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 40016519 is about 6325.8611271510. The cubic root of 40016519 is about 342.0422613439.

The spelling of 40016519 in words is "forty million, sixteen thousand, five hundred nineteen".