247042893 has 8 divisors (see below), whose sum is σ = 331760800. Its totient is φ = 163510128.

The previous prime is 247042891. The next prime is 247042903. The reversal of 247042893 is 398240742.

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

It is not a de Polignac number, because 247042893 - 2¹ = 247042891 is a prime.

It is a super-2 number, since 2×247042893² = 122060381963618898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247042891) 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, 295798 + ... + 296631.

It is an arithmetic number, because the mean of its divisors is an integer number (41470100).

Almost surely, 2^247042893 is an apocalyptic number.

It is an amenable number.

247042893 is a deficient number, since it is larger than the sum of its proper divisors (84717907).

247042893 is a wasteful number, since it uses less digits than its factorization.

247042893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592571.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 247042893 is about 15717.5981943807. The cubic root of 247042893 is about 627.4668526376.

The spelling of 247042893 in words is "two hundred forty-seven million, forty-two thousand, eight hundred ninety-three".