83380931 has 4 divisors (see below), whose sum is σ = 83460000. Its totient is φ = 83301864.

The previous prime is 83380919. The next prime is 83380933. The reversal of 83380931 is 13908338.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83380931 is a prime.

It is a super-2 number, since 2×83380931² = 13904759308853522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83380891 and 83380900.

It is not an unprimeable number, because it can be changed into a prime (83380933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37931 + ... + 40068.

It is an arithmetic number, because the mean of its divisors is an integer number (20865000).

Almost surely, 2^83380931 is an apocalyptic number.

83380931 is a deficient number, since it is larger than the sum of its proper divisors (79069).

83380931 is a wasteful number, since it uses less digits than its factorization.

83380931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79068.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 83380931 is about 9131.3159511650. The cubic root of 83380931 is about 436.8733773237.

The spelling of 83380931 in words is "eighty-three million, three hundred eighty thousand, nine hundred thirty-one".