71389269 has 24 divisors (see below), whose sum is σ = 122216640. Its totient is φ = 40792896.

The previous prime is 71389247. The next prime is 71389291. The reversal of 71389269 is 96298317.

71389269 is a `hidden beast` number, since 7 + 1 + 389 + 269 = 666.

It is an interprime number because it is at equal distance from previous prime (71389247) and next prime (71389291).

It is not a de Polignac number, because 71389269 - 2⁷ = 71389141 is a prime.

It is a super-2 number, since 2×71389269² = 10192855456708722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71389229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19284 + ... + 22685.

It is an arithmetic number, because the mean of its divisors is an integer number (5092360).

Almost surely, 2^71389269 is an apocalyptic number.

It is an amenable number.

71389269 is a deficient number, since it is larger than the sum of its proper divisors (50827371).

71389269 is an equidigital number, since it uses as much as digits as its factorization.

71389269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41991 (or 41979 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 71389269 is about 8449.2170643202. The cubic root of 71389269 is about 414.8371529258.

The spelling of 71389269 in words is "seventy-one million, three hundred eighty-nine thousand, two hundred sixty-nine".