83791445 has 8 divisors (see below), whose sum is σ = 100635480. Its totient is φ = 66976000.

The previous prime is 83791441. The next prime is 83791457. The reversal of 83791445 is 54419738.

It can be written as a sum of positive squares in 4 ways, for example, as 1943236 + 81848209 = 1394^2 + 9047^2 .

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

It is not a de Polignac number, because 83791445 - 2² = 83791441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83791441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (12579435).

Almost surely, 2^83791445 is an apocalyptic number.

It is an amenable number.

83791445 is a deficient number, since it is larger than the sum of its proper divisors (16844035).

83791445 is a wasteful number, since it uses less digits than its factorization.

83791445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14295.

The product of its digits is 120960, while the sum is 41.

The square root of 83791445 is about 9153.7667110321. The cubic root of 83791445 is about 437.5891649557.

The spelling of 83791445 in words is "eighty-three million, seven hundred ninety-one thousand, four hundred forty-five".