1399099738 has 8 divisors (see below), whose sum is σ = 2098981332. Its totient is φ = 699439296.

The previous prime is 1399099733. The next prime is 1399099739. The reversal of 1399099738 is 8379909931.

It can be written as a sum of positive squares in 2 ways, for example, as 1390320369 + 8779369 = 37287^2 + 2963^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1399099733) 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, 38445 + ... + 65392.

Almost surely, 2^1399099738 is an apocalyptic number.

1399099738 is a deficient number, since it is larger than the sum of its proper divisors (699881594).

1399099738 is a wasteful number, since it uses less digits than its factorization.

1399099738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110576.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The square root of 1399099738 is about 37404.5416761120. The cubic root of 1399099738 is about 1118.4491018208.

The spelling of 1399099738 in words is "one billion, three hundred ninety-nine million, ninety-nine thousand, seven hundred thirty-eight".