3954637 has 2 divisors, whose sum is σ = 3954638. Its totient is φ = 3954636.

The previous prime is 3954623. The next prime is 3954649. The reversal of 3954637 is 7364593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3924361 + 30276 = 1981^2 + 174^2 .

It is an emirp because it is prime and its reverse (7364593) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3954637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3954596 and 3954605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3954617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977318 + 1977319.

It is an arithmetic number, because the mean of its divisors is an integer number (1977319).

Almost surely, 2^3954637 is an apocalyptic number.

It is an amenable number.

3954637 is a deficient number, since it is larger than the sum of its proper divisors (1).

3954637 is an equidigital number, since it uses as much as digits as its factorization.

3954637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 37.

The square root of 3954637 is about 1988.6269132243. The cubic root of 3954637 is about 158.1377450709.

The spelling of 3954637 in words is "three million, nine hundred fifty-four thousand, six hundred thirty-seven".