83623279 has 2 divisors, whose sum is σ = 83623280. Its totient is φ = 83623278.

The previous prime is 83623249. The next prime is 83623291. The reversal of 83623279 is 97232638.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83623279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83623249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41811639 + 41811640.

It is an arithmetic number, because the mean of its divisors is an integer number (41811640).

Almost surely, 2^83623279 is an apocalyptic number.

83623279 is a deficient number, since it is larger than the sum of its proper divisors (1).

83623279 is an equidigital number, since it uses as much as digits as its factorization.

83623279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 83623279 is about 9144.5764800782. The cubic root of 83623279 is about 437.2962277169.

The spelling of 83623279 in words is "eighty-three million, six hundred twenty-three thousand, two hundred seventy-nine".