1629427 has 2 divisors, whose sum is σ = 1629428. Its totient is φ = 1629426.

The previous prime is 1629409. The next prime is 1629431. The reversal of 1629427 is 7249261.

It is a strong prime.

It is an emirp because it is prime and its reverse (7249261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1629427 - 2¹⁵ = 1596659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1629457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814713 + 814714.

It is an arithmetic number, because the mean of its divisors is an integer number (814714).

2^1629427 is an apocalyptic number.

1629427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1629427 is an equidigital number, since it uses as much as digits as its factorization.

1629427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 1629427 is about 1276.4901096366. The cubic root of 1629427 is about 117.6734002340.

The spelling of 1629427 in words is "one million, six hundred twenty-nine thousand, four hundred twenty-seven".