773421444 has 36 divisors (see below), whose sum is σ = 1969320444. Its totient is φ = 255923712.

The previous prime is 773421431. The next prime is 773421479. The reversal of 773421444 is 444124377.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 681836544 + 91584900 = 26112^2 + 9570^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 773421399 and 773421408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73477 + ... + 83340.

Almost surely, 2^773421444 is an apocalyptic number.

It is an amenable number.

773421444 is an abundant number, since it is smaller than the sum of its proper divisors (1195899000).

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

773421444 is a wasteful number, since it uses less digits than its factorization.

773421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156964 (or 156959 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 773421444 is about 27810.4556596975. The cubic root of 773421444 is about 917.9212058761.

The spelling of 773421444 in words is "seven hundred seventy-three million, four hundred twenty-one thousand, four hundred forty-four".