1395861039 has 16 divisors (see below), whose sum is σ = 2068829440. Its totient is φ = 930174840.

The previous prime is 1395861029. The next prime is 1395861059. The reversal of 1395861039 is 9301685931.

1395861039 is a `hidden beast` number, since 1 + 39 + 586 + 1 + 0 + 39 = 666.

It is not a de Polignac number, because 1395861039 - 2⁷ = 1395860911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1395860985 and 1395861003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395861029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61704 + ... + 81234.

It is an arithmetic number, because the mean of its divisors is an integer number (129301840).

Almost surely, 2^1395861039 is an apocalyptic number.

1395861039 is a deficient number, since it is larger than the sum of its proper divisors (672968401).

1395861039 is a wasteful number, since it uses less digits than its factorization.

1395861039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22187 (or 22181 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1395861039 is about 37361.2237353115. The cubic root of 1395861039 is about 1117.5854229552.

It can be divided in two parts, 139586 and 1039, that added together give a square (140625 = 375²).

The spelling of 1395861039 in words is "one billion, three hundred ninety-five million, eight hundred sixty-one thousand, thirty-nine".