6949021 has 2 divisors, whose sum is σ = 6949022. Its totient is φ = 6949020.

The previous prime is 6949001. The next prime is 6949057. The reversal of 6949021 is 1209496.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3956121 + 2992900 = 1989^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 6949021 - 2¹⁷ = 6817949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6949001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3474510 + 3474511.

It is an arithmetic number, because the mean of its divisors is an integer number (3474511).

Almost surely, 2^6949021 is an apocalyptic number.

It is an amenable number.

6949021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6949021 is an equidigital number, since it uses as much as digits as its factorization.

6949021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6949021 is about 2636.0995808201. The cubic root of 6949021 is about 190.8276086755.

The spelling of 6949021 in words is "six million, nine hundred forty-nine thousand, twenty-one".