83990345 has 8 divisors (see below), whose sum is σ = 103246920. Its totient is φ = 65553280.

The previous prime is 83990339. The next prime is 83990381. The reversal of 83990345 is 54309938.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 83978896 = 107^2 + 9164^2 .

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

It is not a de Polignac number, because 83990345 - 2⁶ = 83990281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204650 + ... + 205059.

It is an arithmetic number, because the mean of its divisors is an integer number (12905865).

Almost surely, 2^83990345 is an apocalyptic number.

It is an amenable number.

83990345 is a deficient number, since it is larger than the sum of its proper divisors (19256575).

83990345 is a wasteful number, since it uses less digits than its factorization.

83990345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409755.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 83990345 is about 9164.6246513428. The cubic root of 83990345 is about 437.9351338787.

The spelling of 83990345 in words is "eighty-three million, nine hundred ninety thousand, three hundred forty-five".