1401549 has 4 divisors (see below), whose sum is σ = 1868736. Its totient is φ = 934364.

The previous prime is 1401529. The next prime is 1401559. The reversal of 1401549 is 9451041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9451041 = 3 ⋅3150347.

It is a cyclic number.

It is not a de Polignac number, because 1401549 - 2²⁰ = 352973 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401529) 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 in 3 ways as a sum of consecutive naturals, for example, 233589 + ... + 233594.

It is an arithmetic number, because the mean of its divisors is an integer number (467184).

2^1401549 is an apocalyptic number.

It is an amenable number.

1401549 is a deficient number, since it is larger than the sum of its proper divisors (467187).

1401549 is an equidigital number, since it uses as much as digits as its factorization.

1401549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467186.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1401549 is about 1183.8703476310. The cubic root of 1401549 is about 111.9101373146.

The spelling of 1401549 in words is "one million, four hundred one thousand, five hundred forty-nine".