83405641 has 8 divisors (see below), whose sum is σ = 91133568. Its totient is φ = 75702000.

The previous prime is 83405629. The next prime is 83405657. The reversal of 83405641 is 14650438.

It is a happy number.

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

It is not a de Polignac number, because 83405641 - 2⁹ = 83405129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83405671) 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, 1536 + ... + 13006.

It is an arithmetic number, because the mean of its divisors is an integer number (11391696).

Almost surely, 2^83405641 is an apocalyptic number.

It is an amenable number.

83405641 is a deficient number, since it is larger than the sum of its proper divisors (7727927).

83405641 is a wasteful number, since it uses less digits than its factorization.

83405641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 83405641 is about 9132.6688870231. The cubic root of 83405641 is about 436.9165289764.

The spelling of 83405641 in words is "eighty-three million, four hundred five thousand, six hundred forty-one".