1396349858 has 6 divisors (see below), whose sum is σ = 2094604059. Its totient is φ = 698148506.

The previous prime is 1396349839. The next prime is 1396349863. The reversal of 1396349858 is 8589436931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 698174929 + 698174929 = 26423^2 + 26423^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26423.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 39635 + ... + 66057.

Almost surely, 2^1396349858 is an apocalyptic number.

1396349858 is a deficient number, since it is larger than the sum of its proper divisors (698254201).

1396349858 is an frugal number, since it uses more digits than its factorization.

1396349858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52848 (or 26425 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 56.

The square root of 1396349858 is about 37367.7649585843. The cubic root of 1396349858 is about 1117.7158641229.

The spelling of 1396349858 in words is "one billion, three hundred ninety-six million, three hundred forty-nine thousand, eight hundred fifty-eight".