83440669 has 16 divisors (see below), whose sum is σ = 91929600. Its totient is φ = 75269376.

The previous prime is 83440667. The next prime is 83440673. The reversal of 83440669 is 96604438.

It is not a de Polignac number, because 83440669 - 2¹ = 83440667 is a prime.

It is a super-2 number, since 2×83440669² = 13924690486335122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83440663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115692 + ... + 116410.

It is an arithmetic number, because the mean of its divisors is an integer number (5745600).

Almost surely, 2^83440669 is an apocalyptic number.

It is an amenable number.

83440669 is a deficient number, since it is larger than the sum of its proper divisors (8488931).

83440669 is a wasteful number, since it uses less digits than its factorization.

83440669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 83440669 is about 9134.5864164723. The cubic root of 83440669 is about 436.9776845931.

The spelling of 83440669 in words is "eighty-three million, four hundred forty thousand, six hundred sixty-nine".