83440945 has 16 divisors (see below), whose sum is σ = 117226368. Its totient is φ = 55820160.

The previous prime is 83440909. The next prime is 83440963. The reversal of 83440945 is 54904438.

It is not a de Polignac number, because 83440945 - 2⁷ = 83440817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27639 + ... + 30508.

It is an arithmetic number, because the mean of its divisors is an integer number (7326648).

Almost surely, 2^83440945 is an apocalyptic number.

It is an amenable number.

83440945 is a deficient number, since it is larger than the sum of its proper divisors (33785423).

83440945 is a wasteful number, since it uses less digits than its factorization.

83440945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58200.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 83440945 is about 9134.6015238761. The cubic root of 83440945 is about 436.9781663953.

The spelling of 83440945 in words is "eighty-three million, four hundred forty thousand, nine hundred forty-five".