1400220977 has 2 divisors, whose sum is σ = 1400220978. Its totient is φ = 1400220976.

The previous prime is 1400220959. The next prime is 1400221013. The reversal of 1400220977 is 7790220041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1290893041 + 109327936 = 35929^2 + 10456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400220977 - 2⁸ = 1400220721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400220917) 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, 700110488 + 700110489.

It is an arithmetic number, because the mean of its divisors is an integer number (700110489).

Almost surely, 2^1400220977 is an apocalyptic number.

It is an amenable number.

1400220977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400220977 is an equidigital number, since it uses as much as digits as its factorization.

1400220977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1400220977 is about 37419.5266805982. The cubic root of 1400220977 is about 1118.7477972055.

The spelling of 1400220977 in words is "one billion, four hundred million, two hundred twenty thousand, nine hundred seventy-seven".