247078949 has 8 divisors (see below), whose sum is σ = 277654272. Its totient is φ = 218156400.

The previous prime is 247078919. The next prime is 247078967. The reversal of 247078949 is 949870742.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247078949 is a prime.

It is a super-2 number, since 2×247078949² = 122096014077889202, which contains 22 as substring.

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 = 247078897 and 247078906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247078919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412877 + ... + 413474.

It is an arithmetic number, because the mean of its divisors is an integer number (34706784).

Almost surely, 2^247078949 is an apocalyptic number.

It is an amenable number.

247078949 is a deficient number, since it is larger than the sum of its proper divisors (30575323).

247078949 is a wasteful number, since it uses less digits than its factorization.

247078949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826387.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 247078949 is about 15718.7451471165. The cubic root of 247078949 is about 627.4973774910.

The spelling of 247078949 in words is "two hundred forty-seven million, seventy-eight thousand, nine hundred forty-nine".