247672039 has 2 divisors, whose sum is σ = 247672040. Its totient is φ = 247672038.

The previous prime is 247672037. The next prime is 247672063. The reversal of 247672039 is 930276742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247672039 - 2¹ = 247672037 is a prime.

It is a super-2 number, since 2×247672039² = 122682877804835042, which contains 22 as substring.

Together with 247672037, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 247671992 and 247672010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247672037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123836019 + 123836020.

It is an arithmetic number, because the mean of its divisors is an integer number (123836020).

Almost surely, 2^247672039 is an apocalyptic number.

247672039 is a deficient number, since it is larger than the sum of its proper divisors (1).

247672039 is an equidigital number, since it uses as much as digits as its factorization.

247672039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 247672039 is about 15737.5995310594. The cubic root of 247672039 is about 627.9990592911. Note that the first 3 decimals are identical.

The spelling of 247672039 in words is "two hundred forty-seven million, six hundred seventy-two thousand, thirty-nine".