1399106085 has 32 divisors (see below), whose sum is σ = 2420022528. Its totient is φ = 686146560.

The previous prime is 1399106081. The next prime is 1399106087. The reversal of 1399106085 is 5806019931.

It is not a de Polignac number, because 1399106085 - 2² = 1399106081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399106081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37645 + ... + 64925.

It is an arithmetic number, because the mean of its divisors is an integer number (75625704).

Almost surely, 2^1399106085 is an apocalyptic number.

1399106085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1399106085 is a deficient number, since it is larger than the sum of its proper divisors (1020916443).

1399106085 is a wasteful number, since it uses less digits than its factorization.

1399106085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27565.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1399106085 is about 37404.6265186541. The cubic root of 1399106085 is about 1118.4507930955.

The spelling of 1399106085 in words is "one billion, three hundred ninety-nine million, one hundred six thousand, eighty-five".