1399333138 has 32 divisors (see below), whose sum is σ = 2545392384. Its totient is φ = 563231232.

The previous prime is 1399333099. The next prime is 1399333139. The reversal of 1399333138 is 8313339931.

It is a super-2 number, since 2×1399333138² = 3916266462209854088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1399333094 and 1399333103.

It is not an unprimeable number, because it can be changed into a prime (1399333139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109870 + ... + 121942.

It is an arithmetic number, because the mean of its divisors is an integer number (79543512).

Almost surely, 2^1399333138 is an apocalyptic number.

1399333138 is a deficient number, since it is larger than the sum of its proper divisors (1146059246).

1399333138 is a wasteful number, since it uses less digits than its factorization.

1399333138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586.

The product of its digits is 157464, while the sum is 43.

The square root of 1399333138 is about 37407.6614879893. The cubic root of 1399333138 is about 1118.5112921705.

The spelling of 1399333138 in words is "one billion, three hundred ninety-nine million, three hundred thirty-three thousand, one hundred thirty-eight".