1491407 has 2 divisors, whose sum is σ = 1491408. Its totient is φ = 1491406.

The previous prime is 1491403. The next prime is 1491419. The reversal of 1491407 is 7041941.

It is a weak prime.

It is an emirp because it is prime and its reverse (7041941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1491407 - 2² = 1491403 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745703 + 745704.

It is an arithmetic number, because the mean of its divisors is an integer number (745704).

2^1491407 is an apocalyptic number.

1491407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491407 is an equidigital number, since it uses as much as digits as its factorization.

1491407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1491407 is about 1221.2317552373. The cubic root of 1491407 is about 114.2524159688.

The spelling of 1491407 in words is "one million, four hundred ninety-one thousand, four hundred seven".