377777321 has 8 divisors (see below), whose sum is σ = 391343400. Its totient is φ = 364418560.

The previous prime is 377777311. The next prime is 377777341. The reversal of 377777321 is 123777773.

It can be written as a sum of positive squares in 4 ways, for example, as 45225625 + 332551696 = 6725^2 + 18236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377777321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (377777311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48116 + ... + 55413.

It is an arithmetic number, because the mean of its divisors is an integer number (48917925).

Almost surely, 2^377777321 is an apocalyptic number.

It is an amenable number.

377777321 is a deficient number, since it is larger than the sum of its proper divisors (13566079).

377777321 is a wasteful number, since it uses less digits than its factorization.

377777321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103659.

The product of its digits is 302526, while the sum is 44.

The square root of 377777321 is about 19436.4945656361. The cubic root of 377777321 is about 722.9006703925.

The spelling of 377777321 in words is "three hundred seventy-seven million, seven hundred seventy-seven thousand, three hundred twenty-one".