874393644 has 12 divisors (see below), whose sum is σ = 2040251864. Its totient is φ = 291464544.

The previous prime is 874393643. The next prime is 874393669. The reversal of 874393644 is 446393478.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 874393593 and 874393602.

It is not an unprimeable number, because it can be changed into a prime (874393643) 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, 36433057 + ... + 36433080.

Almost surely, 2^874393644 is an apocalyptic number.

It is an amenable number.

874393644 is an abundant number, since it is smaller than the sum of its proper divisors (1165858220).

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

874393644 is a wasteful number, since it uses less digits than its factorization.

874393644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72866144 (or 72866142 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The square root of 874393644 is about 29570.1478521836. The cubic root of 874393644 is about 956.2446037032.

The spelling of 874393644 in words is "eight hundred seventy-four million, three hundred ninety-three thousand, six hundred forty-four".