1423997 has 2 divisors, whose sum is σ = 1423998. Its totient is φ = 1423996.

The previous prime is 1423991. The next prime is 1424021. The reversal of 1423997 is 7993241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 674041 = 866^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423997 - 2¹⁰ = 1422973 is a prime.

It is a d-powerful number, because it can be written as 1 + 4⁷ + 2¹⁹ + 3 + 9³ + 9⁵ + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711998 + 711999.

It is an arithmetic number, because the mean of its divisors is an integer number (711999).

2^1423997 is an apocalyptic number.

It is an amenable number.

1423997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423997 is an equidigital number, since it uses as much as digits as its factorization.

1423997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 1423997 is about 1193.3134542106. The cubic root of 1423997 is about 112.5044475608.

The spelling of 1423997 in words is "one million, four hundred twenty-three thousand, nine hundred ninety-seven".