3918697 has 2 divisors, whose sum is σ = 3918698. Its totient is φ = 3918696.

The previous prime is 3918689. The next prime is 3918743. The reversal of 3918697 is 7968193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 33856 = 1971^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 3918697 - 2³ = 3918689 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3918667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959348 + 1959349.

It is an arithmetic number, because the mean of its divisors is an integer number (1959349).

Almost surely, 2^3918697 is an apocalyptic number.

It is an amenable number.

3918697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918697 is an equidigital number, since it uses as much as digits as its factorization.

3918697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 3918697 is about 1979.5699027819. The cubic root of 3918697 is about 157.6572310762.

It can be divided in two parts, 391869 and 7, that added together give a square (391876 = 626²).

The spelling of 3918697 in words is "three million, nine hundred eighteen thousand, six hundred ninety-seven".