135864847 has 4 divisors (see below), whose sum is σ = 140247616. Its totient is φ = 131482080.

The previous prime is 135864823. The next prime is 135864871. The reversal of 135864847 is 748468531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135864823) and next prime (135864871).

It is a cyclic number.

It is not a de Polignac number, because 135864847 - 2⁷ = 135864719 is a prime.

It is a super-3 number, since 3×135864847³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135864797 and 135864806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135864247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191338 + ... + 2191399.

It is an arithmetic number, because the mean of its divisors is an integer number (35061904).

Almost surely, 2^135864847 is an apocalyptic number.

135864847 is a deficient number, since it is larger than the sum of its proper divisors (4382769).

135864847 is an equidigital number, since it uses as much as digits as its factorization.

135864847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382768.

The product of its digits is 645120, while the sum is 46.

The square root of 135864847 is about 11656.1077122683. The cubic root of 135864847 is about 514.0859104837.

The spelling of 135864847 in words is "one hundred thirty-five million, eight hundred sixty-four thousand, eight hundred forty-seven".