77349408 has 24 divisors (see below), whose sum is σ = 203042448. Its totient is φ = 25783104.

The previous prime is 77349407. The next prime is 77349421. The reversal of 77349408 is 80494377.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 77349408.

It is not an unprimeable number, because it can be changed into a prime (77349401) 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, 402766 + ... + 402957.

It is an arithmetic number, because the mean of its divisors is an integer number (8460102).

Almost surely, 2^77349408 is an apocalyptic number.

It is an amenable number.

77349408 is an abundant number, since it is smaller than the sum of its proper divisors (125693040).

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

77349408 is a wasteful number, since it uses less digits than its factorization.

77349408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805736 (or 805728 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 77349408 is about 8794.8512210270. The cubic root of 77349408 is about 426.0746193870.

The spelling of 77349408 in words is "seventy-seven million, three hundred forty-nine thousand, four hundred eight".