247104091 has 4 divisors (see below), whose sum is σ = 266112112. Its totient is φ = 228096072.

The previous prime is 247104083. The next prime is 247104103. The reversal of 247104091 is 190401742.

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 247104091 - 2³ = 247104083 is a prime.

It is a super-2 number, since 2×247104091² = 122120863577872562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247104001) 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, 9503991 + ... + 9504016.

It is an arithmetic number, because the mean of its divisors is an integer number (66528028).

Almost surely, 2^247104091 is an apocalyptic number.

247104091 is a deficient number, since it is larger than the sum of its proper divisors (19008021).

247104091 is a wasteful number, since it uses less digits than its factorization.

247104091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19008020.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 247104091 is about 15719.5448725464. The cubic root of 247104091 is about 627.5186608420.

The spelling of 247104091 in words is "two hundred forty-seven million, one hundred four thousand, ninety-one".