77473838 has 16 divisors (see below), whose sum is σ = 125381760. Its totient is φ = 35690976.

The previous prime is 77473829. The next prime is 77473859. The reversal of 77473838 is 83837477.

It is a junction number, because it is equal to n+sod(n) for n = 77473792 and 77473801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13328 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (7836360).

Almost surely, 2^77473838 is an apocalyptic number.

77473838 is a deficient number, since it is larger than the sum of its proper divisors (47907922).

77473838 is a wasteful number, since it uses less digits than its factorization.

77473838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531.

The product of its digits is 790272, while the sum is 47.

The square root of 77473838 is about 8801.9224036571. The cubic root of 77473838 is about 426.3029687387.

The spelling of 77473838 in words is "seventy-seven million, four hundred seventy-three thousand, eight hundred thirty-eight".