913239071 has 4 divisors (see below), whose sum is σ = 922281144. Its totient is φ = 904197000.

The previous prime is 913239037. The next prime is 913239083. The reversal of 913239071 is 170932319.

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

It is a cyclic number.

It is not a de Polignac number, because 913239071 - 2¹⁰ = 913238047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913233071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4520885 + ... + 4521086.

It is an arithmetic number, because the mean of its divisors is an integer number (230570286).

Almost surely, 2^913239071 is an apocalyptic number.

913239071 is a deficient number, since it is larger than the sum of its proper divisors (9042073).

913239071 is a wasteful number, since it uses less digits than its factorization.

913239071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042072.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 913239071 is about 30219.8456481829. The cubic root of 913239071 is about 970.2005009417.

The spelling of 913239071 in words is "nine hundred thirteen million, two hundred thirty-nine thousand, seventy-one".