1377222747 has 4 divisors (see below), whose sum is σ = 1836297000. Its totient is φ = 918148496.

The previous prime is 1377222719. The next prime is 1377222779. The reversal of 1377222747 is 7472227731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1377222747 - 2⁸ = 1377222491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377222699 and 1377222708.

It is not an unprimeable number, because it can be changed into a prime (1377223747) 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 3 ways as a sum of consecutive naturals, for example, 229537122 + ... + 229537127.

It is an arithmetic number, because the mean of its divisors is an integer number (459074250).

Almost surely, 2^1377222747 is an apocalyptic number.

1377222747 is a deficient number, since it is larger than the sum of its proper divisors (459074253).

1377222747 is an equidigital number, since it uses as much as digits as its factorization.

1377222747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459074252.

The product of its digits is 230496, while the sum is 42.

The square root of 1377222747 is about 37110.9518471300. The cubic root of 1377222747 is about 1112.5889160427.

The spelling of 1377222747 in words is "one billion, three hundred seventy-seven million, two hundred twenty-two thousand, seven hundred forty-seven".