8013729 has 8 divisors (see below), whose sum is σ = 11149632. Its totient is φ = 5110160.

The previous prime is 8013727. The next prime is 8013743. The reversal of 8013729 is 9273108.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8013729 - 2¹ = 8013727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8013696 and 8013705.

It is not an unprimeable number, because it can be changed into a prime (8013727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58002 + ... + 58139.

It is an arithmetic number, because the mean of its divisors is an integer number (1393704).

Almost surely, 2^8013729 is an apocalyptic number.

It is an amenable number.

8013729 is a deficient number, since it is larger than the sum of its proper divisors (3135903).

8013729 is a wasteful number, since it uses less digits than its factorization.

8013729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116167.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 8013729 is about 2830.8530516436. The cubic root of 8013729 is about 200.1143429493.

The spelling of 8013729 in words is "eight million, thirteen thousand, seven hundred twenty-nine".