1400347873 has 2 divisors, whose sum is σ = 1400347874. Its totient is φ = 1400347872.

The previous prime is 1400347849. The next prime is 1400347889. The reversal of 1400347873 is 3787430041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087482529 + 312865344 = 32977^2 + 17688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400347873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400347373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700173936 + 700173937.

It is an arithmetic number, because the mean of its divisors is an integer number (700173937).

Almost surely, 2^1400347873 is an apocalyptic number.

It is an amenable number.

1400347873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400347873 is an equidigital number, since it uses as much as digits as its factorization.

1400347873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 1400347873 is about 37421.2222275008. Note that the first 5 decimals coincide. The cubic root of 1400347873 is about 1118.7815919504.

The spelling of 1400347873 in words is "one billion, four hundred million, three hundred forty-seven thousand, eight hundred seventy-three".