247869494 has 8 divisors (see below), whose sum is σ = 372258480. Its totient is φ = 123783336.

The previous prime is 247869491. The next prime is 247869509. The reversal of 247869494 is 494968742.

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

It is a super-2 number, since 2×247869494² = 122878572111632072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247869491) 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 3 ways as a sum of consecutive naturals, for example, 73649 + ... + 76940.

It is an arithmetic number, because the mean of its divisors is an integer number (46532310).

Almost surely, 2^247869494 is an apocalyptic number.

247869494 is a deficient number, since it is larger than the sum of its proper divisors (124388986).

247869494 is a wasteful number, since it uses less digits than its factorization.

247869494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151414.

The product of its digits is 3483648, while the sum is 53.

The square root of 247869494 is about 15743.8716331149. The cubic root of 247869494 is about 628.1659044144.

The spelling of 247869494 in words is "two hundred forty-seven million, eight hundred sixty-nine thousand, four hundred ninety-four".