1409631 has 4 divisors (see below), whose sum is σ = 1879512. Its totient is φ = 939752.

The previous prime is 1409587. The next prime is 1409633. The reversal of 1409631 is 1369041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1409631 - 2⁷ = 1409503 is a prime.

It is a super-2 number, since 2×1409631² = 3974119112322, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409633) 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, 234936 + ... + 234941.

It is an arithmetic number, because the mean of its divisors is an integer number (469878).

2^1409631 is an apocalyptic number.

1409631 is a deficient number, since it is larger than the sum of its proper divisors (469881).

1409631 is an equidigital number, since it uses as much as digits as its factorization.

1409631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469880.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1409631 is about 1187.2788215074. The cubic root of 1409631 is about 112.1248342360.

The spelling of 1409631 in words is "one million, four hundred nine thousand, six hundred thirty-one".