3940253 has 2 divisors, whose sum is σ = 3940254. Its totient is φ = 3940252.

The previous prime is 3940249. The next prime is 3940267. The reversal of 3940253 is 3520493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 47524 = 1973^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 3940253 - 2² = 3940249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970126 + 1970127.

It is an arithmetic number, because the mean of its divisors is an integer number (1970127).

Almost surely, 2^3940253 is an apocalyptic number.

It is an amenable number.

3940253 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940253 is an equidigital number, since it uses as much as digits as its factorization.

3940253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 3940253 is about 1985.0070528842. The cubic root of 3940253 is about 157.9457833529.

Adding to 3940253 its product of nonzero digits (3240), we get a palindrome (3943493).

The spelling of 3940253 in words is "three million, nine hundred forty thousand, two hundred fifty-three".