1400881 has 2 divisors, whose sum is σ = 1400882. Its totient is φ = 1400880.

The previous prime is 1400879. The next prime is 1400887. The reversal of 1400881 is 1880041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1343281 + 57600 = 1159^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400881 - 2¹ = 1400879 is a prime.

It is a super-2 number, since 2×1400881² = 3924935152322, which contains 22 as substring.

Together with 1400879, it forms a pair of twin primes.

1400881 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1400887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700440 + 700441.

It is an arithmetic number, because the mean of its divisors is an integer number (700441).

2^1400881 is an apocalyptic number.

It is an amenable number.

1400881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400881 is an equidigital number, since it uses as much as digits as its factorization.

1400881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1400881 is about 1183.5881885183. The cubic root of 1400881 is about 111.8923551200.

The spelling of 1400881 in words is "one million, four hundred thousand, eight hundred eighty-one".