406596649 has 2 divisors, whose sum is σ = 406596650. Its totient is φ = 406596648.

The previous prime is 406596613. The next prime is 406596653. The reversal of 406596649 is 946695604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313821225 + 92775424 = 17715^2 + 9632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406596649 is a prime.

It is not a weakly prime, because it can be changed into another prime (406596679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203298324 + 203298325.

It is an arithmetic number, because the mean of its divisors is an integer number (203298325).

Almost surely, 2^406596649 is an apocalyptic number.

It is an amenable number.

406596649 is a deficient number, since it is larger than the sum of its proper divisors (1).

406596649 is an equidigital number, since it uses as much as digits as its factorization.

406596649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 406596649 is about 20164.2418404462. The cubic root of 406596649 is about 740.8346128647.

The spelling of 406596649 in words is "four hundred six million, five hundred ninety-six thousand, six hundred forty-nine".