39919966459 has 8 divisors (see below), whose sum is σ = 41540685120. Its totient is φ = 38330718216.

The previous prime is 39919966453. The next prime is 39919966469. The reversal of 39919966459 is 95466991993.

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 39919966459 - 2³ = 39919966451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39919966451) 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, 7865017 + ... + 7870090.

It is an arithmetic number, because the mean of its divisors is an integer number (5192585640).

Almost surely, 2^39919966459 is an apocalyptic number.

39919966459 is a deficient number, since it is larger than the sum of its proper divisors (1620718661).

39919966459 is a wasteful number, since it uses less digits than its factorization.

39919966459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15735209.

The product of its digits is 127545840, while the sum is 70.

The spelling of 39919966459 in words is "thirty-nine billion, nine hundred nineteen million, nine hundred sixty-six thousand, four hundred fifty-nine".