1400489 has 2 divisors, whose sum is σ = 1400490. Its totient is φ = 1400488.

The previous prime is 1400479. The next prime is 1400507. The reversal of 1400489 is 9840041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 43264 = 1165^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400489 - 2¹² = 1396393 is a prime.

It is a super-2 number, since 2×1400489² = 3922738878242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1400449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700244 + 700245.

It is an arithmetic number, because the mean of its divisors is an integer number (700245).

2^1400489 is an apocalyptic number.

It is an amenable number.

1400489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400489 is an equidigital number, since it uses as much as digits as its factorization.

1400489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1400489 is about 1183.4225787942. The cubic root of 1400489 is about 111.8819174275.

The spelling of 1400489 in words is "one million, four hundred thousand, four hundred eighty-nine".