948639247 has 4 divisors (see below), whose sum is σ = 948786280. Its totient is φ = 948492216.

The previous prime is 948639221. The next prime is 948639359. The reversal of 948639247 is 742936849.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-948639247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 948639194 and 948639203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948639647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63372 + ... + 76897.

It is an arithmetic number, because the mean of its divisors is an integer number (237196570).

Almost surely, 2^948639247 is an apocalyptic number.

948639247 is a deficient number, since it is larger than the sum of its proper divisors (147033).

948639247 is a wasteful number, since it uses less digits than its factorization.

948639247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147032.

The product of its digits is 2612736, while the sum is 52.

The square root of 948639247 is about 30799.9877759716. The cubic root of 948639247 is about 982.5779850777.

The spelling of 948639247 in words is "nine hundred forty-eight million, six hundred thirty-nine thousand, two hundred forty-seven".