83920007 has 16 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 75112320.

The previous prime is 83920003. The next prime is 83920013. The reversal of 83920007 is 70002938.

It is a cyclic number.

It is not a de Polignac number, because 83920007 - 2² = 83920003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83920003) 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, 29744 + ... + 32442.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^83920007 is an apocalyptic number.

83920007 is a deficient number, since it is larger than the sum of its proper divisors (9391993).

83920007 is a wasteful number, since it uses less digits than its factorization.

83920007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 83920007 is about 9160.7863745423. The cubic root of 83920007 is about 437.8128496476.

The spelling of 83920007 in words is "eighty-three million, nine hundred twenty thousand, seven".