40519999 has 8 divisors (see below), whose sum is σ = 43688960. Its totient is φ = 37358496.

The previous prime is 40519991. The next prime is 40520017. The reversal of 40519999 is 99991504.

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

It is a cyclic number.

It is not a de Polignac number, because 40519999 - 2³ = 40519991 is a prime.

It is a Duffinian number.

40519999 is a modest number, since divided by 9999 gives 4051 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40519991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15409 + ... + 17845.

It is an arithmetic number, because the mean of its divisors is an integer number (5461120).

Almost surely, 2^40519999 is an apocalyptic number.

40519999 is a deficient number, since it is larger than the sum of its proper divisors (3168961).

40519999 is a wasteful number, since it uses less digits than its factorization.

40519999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 40519999 is about 6365.5321065878. The cubic root of 40519999 is about 343.4707897362.

The spelling of 40519999 in words is "forty million, five hundred nineteen thousand, nine hundred ninety-nine".