1417991 has 2 divisors, whose sum is σ = 1417992. Its totient is φ = 1417990.

The previous prime is 1417979. The next prime is 1417993. The reversal of 1417991 is 1997141.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1997141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1417991 - 2¹⁴ = 1401607 is a prime.

Together with 1417993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1417993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708995 + 708996.

It is an arithmetic number, because the mean of its divisors is an integer number (708996).

2^1417991 is an apocalyptic number.

1417991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1417991 is an equidigital number, since it uses as much as digits as its factorization.

1417991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 32.

The square root of 1417991 is about 1190.7942727440. The cubic root of 1417991 is about 112.3460544568.

The spelling of 1417991 in words is "one million, four hundred seventeen thousand, nine hundred ninety-one".