1443239994 has 16 divisors (see below), whose sum is σ = 3298834368. Its totient is φ = 412354272.

The previous prime is 1443239989. The next prime is 1443240023. The reversal of 1443239994 is 4999323441.

It is a super-2 number, since 2×1443239994² = 4165883360562240072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17181387 + ... + 17181470.

It is an arithmetic number, because the mean of its divisors is an integer number (206177148).

Almost surely, 2^1443239994 is an apocalyptic number.

1443239994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1443239994 is an abundant number, since it is smaller than the sum of its proper divisors (1855594374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1443239994 is a wasteful number, since it uses less digits than its factorization.

1443239994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34362869.

The product of its digits is 839808, while the sum is 48.

The square root of 1443239994 is about 37989.9986048960. The cubic root of 1443239994 is about 1130.0895311107.

The spelling of 1443239994 in words is "one billion, four hundred forty-three million, two hundred thirty-nine thousand, nine hundred ninety-four".