1377140477 has 2 divisors, whose sum is σ = 1377140478. Its totient is φ = 1377140476.

The previous prime is 1377140441. The next prime is 1377140483. The reversal of 1377140477 is 7740417731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1268855641 + 108284836 = 35621^2 + 10406^2 .

It is an emirp because it is prime and its reverse (7740417731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377140477 - 2⁸ = 1377140221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377140077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688570238 + 688570239.

It is an arithmetic number, because the mean of its divisors is an integer number (688570239).

Almost surely, 2^1377140477 is an apocalyptic number.

It is an amenable number.

1377140477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377140477 is an equidigital number, since it uses as much as digits as its factorization.

1377140477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115248, while the sum is 41.

The square root of 1377140477 is about 37109.8433976755. The cubic root of 1377140477 is about 1112.5667616713.

The spelling of 1377140477 in words is "one billion, three hundred seventy-seven million, one hundred forty thousand, four hundred seventy-seven".