71290499 has 4 divisors (see below), whose sum is σ = 81474864. Its totient is φ = 61106136.

The previous prime is 71290487. The next prime is 71290519. The reversal of 71290499 is 99409217.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-71290499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71290099) 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, 5092172 + ... + 5092185.

It is an arithmetic number, because the mean of its divisors is an integer number (20368716).

Almost surely, 2^71290499 is an apocalyptic number.

71290499 is a deficient number, since it is larger than the sum of its proper divisors (10184365).

71290499 is a wasteful number, since it uses less digits than its factorization.

71290499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10184364.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 71290499 is about 8443.3701209884. The cubic root of 71290499 is about 414.6457498533.

The spelling of 71290499 in words is "seventy-one million, two hundred ninety thousand, four hundred ninety-nine".