1399232705 has 16 divisors (see below), whose sum is σ = 1810361280. Its totient is φ = 1032067008.

The previous prime is 1399232693. The next prime is 1399232741. The reversal of 1399232705 is 5072329931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1399232705 - 2¹⁰ = 1399231681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45206 + ... + 69584.

It is an arithmetic number, because the mean of its divisors is an integer number (113147580).

Almost surely, 2^1399232705 is an apocalyptic number.

It is an amenable number.

1399232705 is a deficient number, since it is larger than the sum of its proper divisors (411128575).

1399232705 is a wasteful number, since it uses less digits than its factorization.

1399232705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25280.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1399232705 is about 37406.3190517324. The cubic root of 1399232705 is about 1118.4845322496.

The spelling of 1399232705 in words is "one billion, three hundred ninety-nine million, two hundred thirty-two thousand, seven hundred five".