83490405 has 8 divisors (see below), whose sum is σ = 133584672. Its totient is φ = 44528208.

The previous prime is 83490371. The next prime is 83490419. The reversal of 83490405 is 50409438.

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

It is not a de Polignac number, because 83490405 - 2⁸ = 83490149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782999 + ... + 2783028.

It is an arithmetic number, because the mean of its divisors is an integer number (16698084).

Almost surely, 2^83490405 is an apocalyptic number.

It is an amenable number.

83490405 is a deficient number, since it is larger than the sum of its proper divisors (50094267).

83490405 is a wasteful number, since it uses less digits than its factorization.

83490405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566035.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 83490405 is about 9137.3084111241. The cubic root of 83490405 is about 437.0644896072.

The spelling of 83490405 in words is "eighty-three million, four hundred ninety thousand, four hundred five".