3959551 has 2 divisors, whose sum is σ = 3959552. Its totient is φ = 3959550.

The previous prime is 3959539. The next prime is 3959587. The reversal of 3959551 is 1559593.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3959551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3959551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979775 + 1979776.

It is an arithmetic number, because the mean of its divisors is an integer number (1979776).

Almost surely, 2^3959551 is an apocalyptic number.

3959551 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959551 is an equidigital number, since it uses as much as digits as its factorization.

3959551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30375, while the sum is 37.

The square root of 3959551 is about 1989.8620555204. The cubic root of 3959551 is about 158.2032181879.

The spelling of 3959551 in words is "three million, nine hundred fifty-nine thousand, five hundred fifty-one".