947079838 has 4 divisors (see below), whose sum is σ = 1420619760. Its totient is φ = 473539918.

The previous prime is 947079829. The next prime is 947079851. The reversal of 947079838 is 838970749.

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

It is a super-2 number, since 2×947079838² = 1793920439092212488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236769958 + ... + 236769961.

It is an arithmetic number, because the mean of its divisors is an integer number (355154940).

Almost surely, 2^947079838 is an apocalyptic number.

947079838 is a deficient number, since it is larger than the sum of its proper divisors (473539922).

947079838 is a wasteful number, since it uses less digits than its factorization.

947079838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473539921.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 947079838 is about 30774.6622727204. The cubic root of 947079838 is about 982.0392902013.

The spelling of 947079838 in words is "nine hundred forty-seven million, seventy-nine thousand, eight hundred thirty-eight".