4073667421 has 2 divisors, whose sum is σ = 4073667422. Its totient is φ = 4073667420.

The previous prime is 4073667401. The next prime is 4073667457. The reversal of 4073667421 is 1247663704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2409435396 + 1664232025 = 49086^2 + 40795^2 .

It is a cyclic number.

It is not a de Polignac number, because 4073667421 - 2⁷ = 4073667293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4073667401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036833710 + 2036833711.

It is an arithmetic number, because the mean of its divisors is an integer number (2036833711).

Almost surely, 2^4073667421 is an apocalyptic number.

It is an amenable number.

4073667421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4073667421 is an equidigital number, since it uses as much as digits as its factorization.

4073667421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 4073667421 is about 63825.2882563017. The cubic root of 4073667421 is about 1597.0868111603.

The spelling of 4073667421 in words is "four billion, seventy-three million, six hundred sixty-seven thousand, four hundred twenty-one".