83909534 has 16 divisors (see below), whose sum is σ = 130576320. Its totient is φ = 40410240.

The previous prime is 83909533. The next prime is 83909549. The reversal of 83909534 is 43590938.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 83909491 and 83909500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83909533) 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, 2 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (8161020).

Almost surely, 2^83909534 is an apocalyptic number.

83909534 is a deficient number, since it is larger than the sum of its proper divisors (46666786).

83909534 is a wasteful number, since it uses less digits than its factorization.

83909534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13075.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 83909534 is about 9160.2147354743. The cubic root of 83909534 is about 437.7946362525.

The spelling of 83909534 in words is "eighty-three million, nine hundred nine thousand, five hundred thirty-four".