1409847997 has 4 divisors (see below), whose sum is σ = 1471145760. Its totient is φ = 1348550236.

The previous prime is 1409847947. The next prime is 1409848001. The reversal of 1409847997 is 7997489041.

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: 7997489041 = 43721 ⋅182921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1409847997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409847947) 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 in 3 ways as a sum of consecutive naturals, for example, 30648847 + ... + 30648892.

It is an arithmetic number, because the mean of its divisors is an integer number (367786440).

Almost surely, 2^1409847997 is an apocalyptic number.

It is an amenable number.

1409847997 is a deficient number, since it is larger than the sum of its proper divisors (61297763).

1409847997 is an equidigital number, since it uses as much as digits as its factorization.

1409847997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61297762.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 1409847997 is about 37547.9426467017. The cubic root of 1409847997 is about 1121.3058739748.

The spelling of 1409847997 in words is "one billion, four hundred nine million, eight hundred forty-seven thousand, nine hundred ninety-seven".