4021900973 has 4 divisors (see below), whose sum is σ = 4036742208. Its totient is φ = 4007059740.

The previous prime is 4021900933. The next prime is 4021900997. The reversal of 4021900973 is 3790091204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4021900973 - 2⁸ = 4021900717 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 (4021900903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7420211 + ... + 7420752.

It is an arithmetic number, because the mean of its divisors is an integer number (1009185552).

Almost surely, 2^4021900973 is an apocalyptic number.

It is an amenable number.

4021900973 is a deficient number, since it is larger than the sum of its proper divisors (14841235).

4021900973 is a wasteful number, since it uses less digits than its factorization.

4021900973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14841234.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 4021900973 is about 63418.4592449233. The cubic root of 4021900973 is about 1590.2929161174.

The spelling of 4021900973 in words is "four billion, twenty-one million, nine hundred thousand, nine hundred seventy-three".