83421333 has 30 divisors (see below), whose sum is σ = 127811574. Its totient is φ = 54223344.

The previous prime is 83421319. The next prime is 83421337. The reversal of 83421333 is 33312438.

It can be written as a sum of positive squares in only one way, i.e., 54066609 + 29354724 = 7353^2 + 5418^2 .

It is a de Polignac number, because none of the positive numbers 2^k-83421333 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 83421297 and 83421306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83421337) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 149491 + ... + 150047.

Almost surely, 2^83421333 is an apocalyptic number.

It is an amenable number.

83421333 is a deficient number, since it is larger than the sum of its proper divisors (44390241).

83421333 is an equidigital number, since it uses as much as digits as its factorization.

83421333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 603 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 83421333 is about 9133.5279602134. The cubic root of 83421333 is about 436.9439278596.

The spelling of 83421333 in words is "eighty-three million, four hundred twenty-one thousand, three hundred thirty-three".