814863749 has 8 divisors (see below), whose sum is σ = 943061760. Its totient is φ = 689612976.

The previous prime is 814863739. The next prime is 814863761. The reversal of 814863749 is 947368418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 814863749 - 2⁴ = 814863733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 814863697 and 814863706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814863739) 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 7 ways as a sum of consecutive naturals, for example, 736214 + ... + 737319.

It is an arithmetic number, because the mean of its divisors is an integer number (117882720).

Almost surely, 2^814863749 is an apocalyptic number.

It is an amenable number.

814863749 is a deficient number, since it is larger than the sum of its proper divisors (128198011).

814863749 is a wasteful number, since it uses less digits than its factorization.

814863749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473619.

The product of its digits is 1161216, while the sum is 50.

The square root of 814863749 is about 28545.8184153126. The cubic root of 814863749 is about 934.0318074139.

The spelling of 814863749 in words is "eight hundred fourteen million, eight hundred sixty-three thousand, seven hundred forty-nine".