1246938989899 has 4 divisors (see below), whose sum is σ = 1320288342264. Its totient is φ = 1173589637536.

The previous prime is 1246938989843. The next prime is 1246938989921. The reversal of 1246938989899 is 9989898396421.

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 1246938989899 - 2¹⁷ = 1246938858827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246938989999) 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, 36674676157 + ... + 36674676190.

It is an arithmetic number, because the mean of its divisors is an integer number (330072085566).

Almost surely, 2^{1246938989899} is an apocalyptic number.

1246938989899 is a deficient number, since it is larger than the sum of its proper divisors (73349352365).

1246938989899 is an equidigital number, since it uses as much as digits as its factorization.

1246938989899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73349352364.

The product of its digits is 4353564672, while the sum is 85.

The spelling of 1246938989899 in words is "one trillion, two hundred forty-six billion, nine hundred thirty-eight million, nine hundred eighty-nine thousand, eight hundred ninety-nine".