1399121082 has 12 divisors (see below), whose sum is σ = 3031429050. Its totient is φ = 466373688.

The previous prime is 1399121021. The next prime is 1399121089. The reversal of 1399121082 is 2801219931.

It can be written as a sum of positive squares in only one way, i.e., 1395694881 + 3426201 = 37359^2 + 1851^2 .

It is not an unprimeable number, because it can be changed into a prime (1399121089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38864457 + ... + 38864492.

Almost surely, 2^1399121082 is an apocalyptic number.

1399121082 is an abundant number, since it is smaller than the sum of its proper divisors (1632307968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399121082 is a wasteful number, since it uses less digits than its factorization.

1399121082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77728957 (or 77728954 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1399121082 is about 37404.8269879704. The cubic root of 1399121082 is about 1118.4547893011.

The spelling of 1399121082 in words is "one billion, three hundred ninety-nine million, one hundred twenty-one thousand, eighty-two".