77938948 has 24 divisors (see below), whose sum is σ = 144715032. Its totient is φ = 36601344.

The previous prime is 77938943. The next prime is 77938963. The reversal of 77938948 is 84983977.

It can be written as a sum of positive squares in 4 ways, for example, as 42797764 + 35141184 = 6542^2 + 5928^2 .

It is not an unprimeable number, because it can be changed into a prime (77938943) 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, 45190 + ... + 46882.

It is an arithmetic number, because the mean of its divisors is an integer number (6029793).

Almost surely, 2^77938948 is an apocalyptic number.

It is an amenable number.

77938948 is a deficient number, since it is larger than the sum of its proper divisors (66776084).

77938948 is a wasteful number, since it uses less digits than its factorization.

77938948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2389 counting only the distinct ones).

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

The square root of 77938948 is about 8828.3038008442. The cubic root of 77938948 is about 427.1543628510.

The spelling of 77938948 in words is "seventy-seven million, nine hundred thirty-eight thousand, nine hundred forty-eight".