71899486 has 8 divisors (see below), whose sum is σ = 110479824. Its totient is φ = 35072880.

The previous prime is 71899469. The next prime is 71899493. The reversal of 71899486 is 68499817.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438330 + ... + 438493.

It is an arithmetic number, because the mean of its divisors is an integer number (13809978).

Almost surely, 2^71899486 is an apocalyptic number.

71899486 is a deficient number, since it is larger than the sum of its proper divisors (38580338).

71899486 is a wasteful number, since it uses less digits than its factorization.

71899486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876866.

The product of its digits is 870912, while the sum is 52.

The square root of 71899486 is about 8479.3564614303. The cubic root of 71899486 is about 415.8230841348.

The spelling of 71899486 in words is "seventy-one million, eight hundred ninety-nine thousand, four hundred eighty-six".