247003947 has 12 divisors (see below), whose sum is σ = 358075120. Its totient is φ = 164073168.

The previous prime is 247003907. The next prime is 247003961. The reversal of 247003947 is 749300742.

It is not a de Polignac number, because 247003947 - 2¹⁴ = 246987563 is a prime.

It is a super-2 number, since 2×247003947² = 122021899667157618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247003907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47047 + ... + 52032.

Almost surely, 2^247003947 is an apocalyptic number.

247003947 is a deficient number, since it is larger than the sum of its proper divisors (111071173).

247003947 is a wasteful number, since it uses less digits than its factorization.

247003947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99362 (or 99359 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 247003947 is about 15716.3592157980. The cubic root of 247003947 is about 627.4338777858.

The spelling of 247003947 in words is "two hundred forty-seven million, three thousand, nine hundred forty-seven".