1401629 has 2 divisors, whose sum is σ = 1401630. Its totient is φ = 1401628.

The previous prime is 1401623. The next prime is 1401641. The reversal of 1401629 is 9261041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 158404 = 1115^2 + 398^2 .

It is an emirp because it is prime and its reverse (9261041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401629 - 2⁴ = 1401613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700814 + 700815.

It is an arithmetic number, because the mean of its divisors is an integer number (700815).

2^1401629 is an apocalyptic number.

It is an amenable number.

1401629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401629 is an equidigital number, since it uses as much as digits as its factorization.

1401629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1401629 is about 1183.9041346325. The cubic root of 1401629 is about 111.9122665399.

The spelling of 1401629 in words is "one million, four hundred one thousand, six hundred twenty-nine".