4723690921 has 2 divisors, whose sum is σ = 4723690922. Its totient is φ = 4723690920.

The previous prime is 4723690913. The next prime is 4723690957. The reversal of 4723690921 is 1290963274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2594883600 + 2128807321 = 50940^2 + 46139^2 .

It is a cyclic number.

It is not a de Polignac number, because 4723690921 - 2³ = 4723690913 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (4723690991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2361845460 + 2361845461.

It is an arithmetic number, because the mean of its divisors is an integer number (2361845461).

Almost surely, 2^4723690921 is an apocalyptic number.

It is an amenable number.

4723690921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4723690921 is an equidigital number, since it uses as much as digits as its factorization.

4723690921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 4723690921 is about 68729.1126161251. The cubic root of 4723690921 is about 1677.8784303214.

The spelling of 4723690921 in words is "four billion, seven hundred twenty-three million, six hundred ninety thousand, nine hundred twenty-one".