83190905 has 8 divisors (see below), whose sum is σ = 114090432. Its totient is φ = 57045168.

The previous prime is 83190889. The next prime is 83190907. The reversal of 83190905 is 50909138.

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

It is a cyclic number.

It is not a de Polignac number, because 83190905 - 2⁴ = 83190889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2376883 = 83190905 / (8 + 3 + 1 + 9 + 0 + 9 + 0 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83190907) 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, 1188407 + ... + 1188476.

It is an arithmetic number, because the mean of its divisors is an integer number (14261304).

Almost surely, 2^83190905 is an apocalyptic number.

It is an amenable number.

83190905 is a deficient number, since it is larger than the sum of its proper divisors (30899527).

83190905 is a wasteful number, since it uses less digits than its factorization.

83190905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376895.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 83190905 is about 9120.9048344997. The cubic root of 83190905 is about 436.5412452437.

It can be divided in two parts, 8 and 3190905, that added together give a palindrome (3190913).

The spelling of 83190905 in words is "eighty-three million, one hundred ninety thousand, nine hundred five".