1409843357 has 4 divisors (see below), whose sum is σ = 1518292860. Its totient is φ = 1301393856.

The previous prime is 1409843329. The next prime is 1409843399. The reversal of 1409843357 is 7533489041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 427083556 + 982759801 = 20666^2 + 31349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1409843357 - 2⁸ = 1409843101 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 (1409843317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54224732 + ... + 54224757.

It is an arithmetic number, because the mean of its divisors is an integer number (379573215).

Almost surely, 2^1409843357 is an apocalyptic number.

It is an amenable number.

1409843357 is a deficient number, since it is larger than the sum of its proper divisors (108449503).

1409843357 is a wasteful number, since it uses less digits than its factorization.

1409843357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108449502.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 1409843357 is about 37547.8808589779. The cubic root of 1409843357 is about 1121.3046438505.

The spelling of 1409843357 in words is "one billion, four hundred nine million, eight hundred forty-three thousand, three hundred fifty-seven".