1400885797 has 2 divisors, whose sum is σ = 1400885798. Its totient is φ = 1400885796.

The previous prime is 1400885791. The next prime is 1400885813. The reversal of 1400885797 is 7975880041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1186526916 + 214358881 = 34446^2 + 14641^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400885797 - 2¹¹ = 1400883749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400885797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400885791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700442898 + 700442899.

It is an arithmetic number, because the mean of its divisors is an integer number (700442899).

Almost surely, 2^1400885797 is an apocalyptic number.

It is an amenable number.

1400885797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400885797 is an equidigital number, since it uses as much as digits as its factorization.

1400885797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 1400885797 is about 37428.4089562995. The cubic root of 1400885797 is about 1118.9248283649.

The spelling of 1400885797 in words is "one billion, four hundred million, eight hundred eighty-five thousand, seven hundred ninety-seven".