247990334 has 8 divisors (see below), whose sum is σ = 378290520. Its totient is φ = 121893496.

The previous prime is 247990321. The next prime is 247990349. The reversal of 247990334 is 433099742.

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

It is a super-2 number, since 2×247990334² = 122998411514863112, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 247990291 and 247990300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050689 + ... + 1050924.

It is an arithmetic number, because the mean of its divisors is an integer number (47286315).

Almost surely, 2^247990334 is an apocalyptic number.

247990334 is a deficient number, since it is larger than the sum of its proper divisors (130300186).

247990334 is a wasteful number, since it uses less digits than its factorization.

247990334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101674.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 247990334 is about 15747.7088492263. The cubic root of 247990334 is about 628.2679678493.

The spelling of 247990334 in words is "two hundred forty-seven million, nine hundred ninety thousand, three hundred thirty-four".