3651929 has 2 divisors, whose sum is σ = 3651930. Its totient is φ = 3651928.

The previous prime is 3651919. The next prime is 3651943. The reversal of 3651929 is 9291563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 1243225 = 1552^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651929 - 2⁸ = 3651673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3651919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825964 + 1825965.

It is an arithmetic number, because the mean of its divisors is an integer number (1825965).

Almost surely, 2^3651929 is an apocalyptic number.

It is an amenable number.

3651929 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651929 is an equidigital number, since it uses as much as digits as its factorization.

3651929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 3651929 is about 1911.0020931438. The cubic root of 3651929 is about 153.9952913611.

The spelling of 3651929 in words is "three million, six hundred fifty-one thousand, nine hundred twenty-nine".