400020083 has 4 divisors (see below), whose sum is σ = 405990600. Its totient is φ = 394049568.

The previous prime is 400020031. The next prime is 400020109. The reversal of 400020083 is 380020004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400020083 - 2⁸ = 400019827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400020883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2985158 + ... + 2985291.

It is an arithmetic number, because the mean of its divisors is an integer number (101497650).

Almost surely, 2^400020083 is an apocalyptic number.

400020083 is a deficient number, since it is larger than the sum of its proper divisors (5970517).

400020083 is an equidigital number, since it uses as much as digits as its factorization.

400020083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970516.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400020083 is about 20000.5020686982. The cubic root of 400020083 is about 736.8186305891.

Adding to 400020083 its reverse (380020004), we get a palindrome (780040087).

The spelling of 400020083 in words is "four hundred million, twenty thousand, eighty-three".