7940249 has 2 divisors, whose sum is σ = 7940250. Its totient is φ = 7940248.

The previous prime is 7940243. The next prime is 7940269. The reversal of 7940249 is 9420497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5593225 + 2347024 = 2365^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 7940249 - 2¹² = 7936153 is a prime.

It is not a weakly prime, because it can be changed into another prime (7940243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970124 + 3970125.

It is an arithmetic number, because the mean of its divisors is an integer number (3970125).

Almost surely, 2^7940249 is an apocalyptic number.

It is an amenable number.

7940249 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940249 is an equidigital number, since it uses as much as digits as its factorization.

7940249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 7940249 is about 2817.8447437714. The cubic root of 7940249 is about 199.5008301840.

The spelling of 7940249 in words is "seven million, nine hundred forty thousand, two hundred forty-nine".