83908945 has 8 divisors (see below), whose sum is σ = 105068736. Its totient is φ = 64208496.

The previous prime is 83908943. The next prime is 83908969. The reversal of 83908945 is 54980938.

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

It is a cyclic number.

It is not a de Polignac number, because 83908945 - 2¹ = 83908943 is a prime.

It is a super-2 number, since 2×83908945² = 14081422102026050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83908895 and 83908904.

It is not an unprimeable number, because it can be changed into a prime (83908943) 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, 364707 + ... + 364936.

It is an arithmetic number, because the mean of its divisors is an integer number (13133592).

Almost surely, 2^83908945 is an apocalyptic number.

It is an amenable number.

83908945 is a deficient number, since it is larger than the sum of its proper divisors (21159791).

83908945 is a wasteful number, since it uses less digits than its factorization.

83908945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729671.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 83908945 is about 9160.1825855165. The cubic root of 83908945 is about 437.7936118888.

The spelling of 83908945 in words is "eighty-three million, nine hundred eight thousand, nine hundred forty-five".