1400087081 has 2 divisors, whose sum is σ = 1400087082. Its totient is φ = 1400087080.

The previous prime is 1400087011. The next prime is 1400087093. The reversal of 1400087081 is 1807800041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 953821456 + 446265625 = 30884^2 + 21125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400087081 is a prime.

It is a super-2 number, since 2×1400087081² = 3920487668766201122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1400087011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700043540 + 700043541.

It is an arithmetic number, because the mean of its divisors is an integer number (700043541).

Almost surely, 2^1400087081 is an apocalyptic number.

It is an amenable number.

1400087081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400087081 is an equidigital number, since it uses as much as digits as its factorization.

1400087081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 1400087081 is about 37417.7375184551. The cubic root of 1400087081 is about 1118.7121360176.

The spelling of 1400087081 in words is "one billion, four hundred million, eighty-seven thousand, eighty-one".