77140938 has 16 divisors (see below), whose sum is σ = 176322240. Its totient is φ = 22040256.

The previous prime is 77140897. The next prime is 77140939. The reversal of 77140938 is 83904177.

It is a super-3 number, since 3×77140938³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77140896 and 77140905.

It is not an unprimeable number, because it can be changed into a prime (77140939) 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, 918303 + ... + 918386.

It is an arithmetic number, because the mean of its divisors is an integer number (11020140).

Almost surely, 2^77140938 is an apocalyptic number.

77140938 is an abundant number, since it is smaller than the sum of its proper divisors (99181302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77140938 is a wasteful number, since it uses less digits than its factorization.

77140938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836701.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 77140938 is about 8782.9914038441. The cubic root of 77140938 is about 425.6914934464.

The spelling of 77140938 in words is "seventy-seven million, one hundred forty thousand, nine hundred thirty-eight".