1377672047 has 2 divisors, whose sum is σ = 1377672048. Its totient is φ = 1377672046.

The previous prime is 1377672019. The next prime is 1377672059. The reversal of 1377672047 is 7402767731.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7402767731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377672047 - 2²⁰ = 1376623471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377671989 and 1377672007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377672077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688836023 + 688836024.

It is an arithmetic number, because the mean of its divisors is an integer number (688836024).

Almost surely, 2^1377672047 is an apocalyptic number.

1377672047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377672047 is an equidigital number, since it uses as much as digits as its factorization.

1377672047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345744, while the sum is 44.

The square root of 1377672047 is about 37117.0048225877. The cubic root of 1377672047 is about 1112.7098918375.

The spelling of 1377672047 in words is "one billion, three hundred seventy-seven million, six hundred seventy-two thousand, forty-seven".