1339999331 has 4 divisors (see below), whose sum is σ = 1461817464. Its totient is φ = 1218181200.

The previous prime is 1339999307. The next prime is 1339999333.

It is a happy number.

1339999331 is nontrivially palindromic in base 10.

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 1339999331 - 2⁶ = 1339999267 is a prime.

It is a super-2 number, since 2×1339999331² = 3591196414160895122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1339999331.

It is not an unprimeable number, because it can be changed into a prime (1339999333) 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, 60909050 + ... + 60909071.

It is an arithmetic number, because the mean of its divisors is an integer number (365454366).

Almost surely, 2^1339999331 is an apocalyptic number.

1339999331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1339999331 is a deficient number, since it is larger than the sum of its proper divisors (121818133).

1339999331 is a wasteful number, since it uses less digits than its factorization.

1339999331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121818132.

The product of its digits is 531441, while the sum is 50.

The square root of 1339999331 is about 36606.0012976015. The cubic root of 1339999331 is about 1102.4735879783.

The spelling of 1339999331 in words is "one billion, three hundred thirty-nine million, nine hundred ninety-nine thousand, three hundred thirty-one".