1377420347 has 2 divisors, whose sum is σ = 1377420348. Its totient is φ = 1377420346.

The previous prime is 1377420311. The next prime is 1377420353. The reversal of 1377420347 is 7430247731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1377420347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1377420347.

It is not a weakly prime, because it can be changed into another prime (1377420547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688710173 + 688710174.

It is an arithmetic number, because the mean of its divisors is an integer number (688710174).

Almost surely, 2^1377420347 is an apocalyptic number.

1377420347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377420347 is an equidigital number, since it uses as much as digits as its factorization.

1377420347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 38.

The square root of 1377420347 is about 37113.6140385169. The cubic root of 1377420347 is about 1112.6421238618.

The spelling of 1377420347 in words is "one billion, three hundred seventy-seven million, four hundred twenty thousand, three hundred forty-seven".