40000249999 has 4 divisors (see below), whose sum is σ = 40025142864. Its totient is φ = 39975357136.

The previous prime is 40000249963. The next prime is 40000250021. The reversal of 40000249999 is 99994200004.

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 40000249999 - 2²³ = 39991861391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000249799) 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, 12444022 + ... + 12447235.

It is an arithmetic number, because the mean of its divisors is an integer number (10006285716).

Almost surely, 2^40000249999 is an apocalyptic number.

40000249999 is a deficient number, since it is larger than the sum of its proper divisors (24892865).

40000249999 is a wasteful number, since it uses less digits than its factorization.

40000249999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24892864.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 40000249999 in words is "forty billion, two hundred forty-nine thousand, nine hundred ninety-nine".