247432489 has 8 divisors (see below), whose sum is σ = 252252000. Its totient is φ = 242633952.

The previous prime is 247432457. The next prime is 247432513. The reversal of 247432489 is 984234742.

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

It is a cyclic number.

It is not a de Polignac number, because 247432489 - 2⁵ = 247432457 is a prime.

It is a super-2 number, since 2×247432489² = 122445673225470242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247432789) 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, 19717 + ... + 29725.

It is an arithmetic number, because the mean of its divisors is an integer number (31531500).

Almost surely, 2^247432489 is an apocalyptic number.

It is an amenable number.

247432489 is a deficient number, since it is larger than the sum of its proper divisors (4819511).

247432489 is a wasteful number, since it uses less digits than its factorization.

247432489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487.

The product of its digits is 387072, while the sum is 43.

The square root of 247432489 is about 15729.9869357861. The cubic root of 247432489 is about 627.7965257274.

The spelling of 247432489 in words is "two hundred forty-seven million, four hundred thirty-two thousand, four hundred eighty-nine".