1399036705 has 32 divisors (see below), whose sum is σ = 1901283840. Its totient is φ = 978942720.

The previous prime is 1399036697. The next prime is 1399036757. The reversal of 1399036705 is 5076309931.

It is a happy number.

It is not a de Polignac number, because 1399036705 - 2³ = 1399036697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504232 + ... + 506998.

It is an arithmetic number, because the mean of its divisors is an integer number (59415120).

Almost surely, 2^1399036705 is an apocalyptic number.

It is an amenable number.

1399036705 is a deficient number, since it is larger than the sum of its proper divisors (502247135).

1399036705 is a wasteful number, since it uses less digits than its factorization.

1399036705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 1399036705 is about 37403.6990817753. The cubic root of 1399036705 is about 1118.4323052435.

The spelling of 1399036705 in words is "one billion, three hundred ninety-nine million, thirty-six thousand, seven hundred five".