1426669 has 2 divisors, whose sum is σ = 1426670. Its totient is φ = 1426668.

The previous prime is 1426643. The next prime is 1426673. The reversal of 1426669 is 9666241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 149769 = 1130^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426669 - 2⁷ = 1426541 is a prime.

It is a super-2 number, since 2×1426669² = 4070768871122, which contains 22 as substring.

1426669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1426619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713334 + 713335.

It is an arithmetic number, because the mean of its divisors is an integer number (713335).

2^1426669 is an apocalyptic number.

It is an amenable number.

1426669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426669 is an equidigital number, since it uses as much as digits as its factorization.

1426669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 1426669 is about 1194.4325012323. The cubic root of 1426669 is about 112.5747716921.

The spelling of 1426669 in words is "one million, four hundred twenty-six thousand, six hundred sixty-nine".