1409661 has 24 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 823200.

The previous prime is 1409659. The next prime is 1409677. The reversal of 1409661 is 1669041.

It is not a de Polignac number, because 1409661 - 2¹ = 1409659 is a prime.

1409661 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409651) 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 23 ways as a sum of consecutive naturals, for example, 2626 + ... + 3116.

It is an arithmetic number, because the mean of its divisors is an integer number (95940).

2^1409661 is an apocalyptic number.

1409661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1409661 is a deficient number, since it is larger than the sum of its proper divisors (892899).

1409661 is a wasteful number, since it uses less digits than its factorization.

1409661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1409661 is about 1187.2914553723. The cubic root of 1409661 is about 112.1256296501.

It can be divided in two parts, 140 and 9661, that added together give a square (9801 = 99²).

The spelling of 1409661 in words is "one million, four hundred nine thousand, six hundred sixty-one".