247384894 has 8 divisors (see below), whose sum is σ = 371297880. Its totient is φ = 123618936.

The previous prime is 247384853. The next prime is 247384897. The reversal of 247384894 is 498483742.

It is a happy number.

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

It is a super-2 number, since 2×247384894² = 122398571558782472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247384897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32449 + ... + 39340.

It is an arithmetic number, because the mean of its divisors is an integer number (46412235).

Almost surely, 2^247384894 is an apocalyptic number.

247384894 is a deficient number, since it is larger than the sum of its proper divisors (123912986).

247384894 is a wasteful number, since it uses less digits than its factorization.

247384894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73514.

The product of its digits is 1548288, while the sum is 49.

The square root of 247384894 is about 15728.4739882800. The cubic root of 247384894 is about 627.7562697748.

The spelling of 247384894 in words is "two hundred forty-seven million, three hundred eighty-four thousand, eight hundred ninety-four".