1399106938 has 8 divisors (see below), whose sum is σ = 2098830132. Its totient is φ = 699496896.

The previous prime is 1399106927. The next prime is 1399106939. The reversal of 1399106938 is 8396019931.

It can be written as a sum of positive squares in 2 ways, for example, as 1398236449 + 870489 = 37393^2 + 933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1399106891 and 1399106900.

It is not an unprimeable number, because it can be changed into a prime (1399106939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17356 + ... + 55672.

Almost surely, 2^1399106938 is an apocalyptic number.

1399106938 is a deficient number, since it is larger than the sum of its proper divisors (699723194).

1399106938 is a wasteful number, since it uses less digits than its factorization.

1399106938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56576.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 1399106938 is about 37404.6379209851. The cubic root of 1399106938 is about 1118.4510203926.

The spelling of 1399106938 in words is "one billion, three hundred ninety-nine million, one hundred six thousand, nine hundred thirty-eight".