83387609 has 4 divisors (see below), whose sum is σ = 83887104. Its totient is φ = 82888116.

The previous prime is 83387587. The next prime is 83387639. The reversal of 83387609 is 90678338.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83387609 - 2¹⁶ = 83322073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83387609.

It is not an unprimeable number, because it can be changed into a prime (83387639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249497 + ... + 249830.

It is an arithmetic number, because the mean of its divisors is an integer number (20971776).

Almost surely, 2^83387609 is an apocalyptic number.

It is an amenable number.

83387609 is a deficient number, since it is larger than the sum of its proper divisors (499495).

83387609 is a wasteful number, since it uses less digits than its factorization.

83387609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499494.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 83387609 is about 9131.6816085538. The cubic root of 83387609 is about 436.8850401123.

The spelling of 83387609 in words is "eighty-three million, three hundred eighty-seven thousand, six hundred nine".