873211901 has 2 divisors, whose sum is σ = 873211902. Its totient is φ = 873211900.

The previous prime is 873211897. The next prime is 873211931. The reversal of 873211901 is 109112378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456847876 + 416364025 = 21374^2 + 20405^2 .

It is a cyclic number.

It is not a de Polignac number, because 873211901 - 2² = 873211897 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873211931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436605950 + 436605951.

It is an arithmetic number, because the mean of its divisors is an integer number (436605951).

Almost surely, 2^873211901 is an apocalyptic number.

It is an amenable number.

873211901 is a deficient number, since it is larger than the sum of its proper divisors (1).

873211901 is an equidigital number, since it uses as much as digits as its factorization.

873211901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 873211901 is about 29550.1590689458. The cubic root of 873211901 is about 955.8136212969.

The spelling of 873211901 in words is "eight hundred seventy-three million, two hundred eleven thousand, nine hundred one".