1999904507 has 8 divisors (see below), whose sum is σ = 2034603792. Its totient is φ = 1965348000.

The previous prime is 1999904479. The next prime is 1999904521. The reversal of 1999904507 is 7054099991.

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 1999904507 - 2⁶ = 1999904443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999904537) 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, 7244 + ... + 63657.

It is an arithmetic number, because the mean of its divisors is an integer number (254325474).

Almost surely, 2^1999904507 is an apocalyptic number.

1999904507 is a deficient number, since it is larger than the sum of its proper divisors (34699285).

1999904507 is an equidigital number, since it uses as much as digits as its factorization.

1999904507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71389.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 1999904507 is about 44720.2918930545. The cubic root of 1999904507 is about 1259.9009973023.

The spelling of 1999904507 in words is "one billion, nine hundred ninety-nine million, nine hundred four thousand, five hundred seven".