64239113 has 4 divisors (see below), whose sum is σ = 64289940. Its totient is φ = 64188288.

The previous prime is 64239103. The next prime is 64239121. The reversal of 64239113 is 31193246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37063744 + 27175369 = 6088^2 + 5213^2 .

It is a cyclic number.

It is not a de Polignac number, because 64239113 - 2¹⁴ = 64222729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64239103) 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, 23468 + ... + 26061.

It is an arithmetic number, because the mean of its divisors is an integer number (16072485).

Almost surely, 2^64239113 is an apocalyptic number.

It is an amenable number.

64239113 is a deficient number, since it is larger than the sum of its proper divisors (50827).

64239113 is a wasteful number, since it uses less digits than its factorization.

64239113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50826.

The product of its digits is 3888, while the sum is 29.

The square root of 64239113 is about 8014.9306297684. The cubic root of 64239113 is about 400.4975329791.

The spelling of 64239113 in words is "sixty-four million, two hundred thirty-nine thousand, one hundred thirteen".