83963905 has 4 divisors (see below), whose sum is σ = 100756692. Its totient is φ = 67171120.

The previous prime is 83963897. The next prime is 83963917. The reversal of 83963905 is 50936938.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46362481 + 37601424 = 6809^2 + 6132^2 .

It is not a de Polignac number, because 83963905 - 2³ = 83963897 is a prime.

It is a Duffinian 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, 8396386 + ... + 8396395.

It is an arithmetic number, because the mean of its divisors is an integer number (25189173).

Almost surely, 2^83963905 is an apocalyptic number.

It is an amenable number.

83963905 is a deficient number, since it is larger than the sum of its proper divisors (16792787).

83963905 is a wasteful number, since it uses less digits than its factorization.

83963905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16792786.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 83963905 is about 9163.1820346428. The cubic root of 83963905 is about 437.8891753416.

The spelling of 83963905 in words is "eighty-three million, nine hundred sixty-three thousand, nine hundred five".