83629405 has 4 divisors (see below), whose sum is σ = 100355292. Its totient is φ = 66903520.

The previous prime is 83629397. The next prime is 83629439. The reversal of 83629405 is 50492638.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49266361 + 34363044 = 7019^2 + 5862^2 .

It is not a de Polignac number, because 83629405 - 2³ = 83629397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8362936 + ... + 8362945.

It is an arithmetic number, because the mean of its divisors is an integer number (25088823).

Almost surely, 2^83629405 is an apocalyptic number.

It is an amenable number.

83629405 is a deficient number, since it is larger than the sum of its proper divisors (16725887).

83629405 is a wasteful number, since it uses less digits than its factorization.

83629405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16725886.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 83629405 is about 9144.9114265804. The cubic root of 83629405 is about 437.3069058093.

The spelling of 83629405 in words is "eighty-three million, six hundred twenty-nine thousand, four hundred five".