1400299561 has 2 divisors, whose sum is σ = 1400299562. Its totient is φ = 1400299560.

The previous prime is 1400299553. The next prime is 1400299603. The reversal of 1400299561 is 1659920041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1092963600 + 307335961 = 33060^2 + 17531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400299561 - 2³ = 1400299553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400299561.

It is not a weakly prime, because it can be changed into another prime (1400299261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700149780 + 700149781.

It is an arithmetic number, because the mean of its divisors is an integer number (700149781).

Almost surely, 2^1400299561 is an apocalyptic number.

It is an amenable number.

1400299561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400299561 is an equidigital number, since it uses as much as digits as its factorization.

1400299561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1400299561 is about 37420.5767058713. The cubic root of 1400299561 is about 1118.7687258145.

The spelling of 1400299561 in words is "one billion, four hundred million, two hundred ninety-nine thousand, five hundred sixty-one".