83816906 has 4 divisors (see below), whose sum is σ = 125725362. Its totient is φ = 41908452.

The previous prime is 83816897. The next prime is 83816927. The reversal of 83816906 is 60961838.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 3553225 = 8959^2 + 1885^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20954225 + ... + 20954228.

Almost surely, 2^83816906 is an apocalyptic number.

83816906 is a deficient number, since it is larger than the sum of its proper divisors (41908456).

83816906 is a wasteful number, since it uses less digits than its factorization.

83816906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41908455.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 83816906 is about 9155.1573443606. The cubic root of 83816906 is about 437.6334826440.

The spelling of 83816906 in words is "eighty-three million, eight hundred sixteen thousand, nine hundred six".