3973973 has 2 divisors, whose sum is σ = 3973974. Its totient is φ = 3973972.

The previous prime is 3973943. The next prime is 3973997. The reversal of 3973973 is 3793793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2289169 + 1684804 = 1513^2 + 1298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3973973 is a prime.

It is a super-2 number, since 2×3973973² = 31584922809458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3973973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3973933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986986 + 1986987.

It is an arithmetic number, because the mean of its divisors is an integer number (1986987).

Almost surely, 2^3973973 is an apocalyptic number.

It is an amenable number.

3973973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3973973 is an equidigital number, since it uses as much as digits as its factorization.

3973973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107163, while the sum is 41.

The square root of 3973973 is about 1993.4826309752. The cubic root of 3973973 is about 158.3950616807.

The spelling of 3973973 in words is "three million, nine hundred seventy-three thousand, nine hundred seventy-three".