1400332649 has 2 divisors, whose sum is σ = 1400332650. Its totient is φ = 1400332648.

The previous prime is 1400332627. The next prime is 1400332679. The reversal of 1400332649 is 9462330041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763527424 + 636805225 = 27632^2 + 25235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400332649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1400332679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700166324 + 700166325.

It is an arithmetic number, because the mean of its divisors is an integer number (700166325).

Almost surely, 2^1400332649 is an apocalyptic number.

It is an amenable number.

1400332649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400332649 is an equidigital number, since it uses as much as digits as its factorization.

1400332649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1400332649 is about 37421.0188129613. The cubic root of 1400332649 is about 1118.7775376262. Note that the first 3 decimals are identical.

The spelling of 1400332649 in words is "one billion, four hundred million, three hundred thirty-two thousand, six hundred forty-nine".