1377472417 has 2 divisors, whose sum is σ = 1377472418. Its totient is φ = 1377472416.

The previous prime is 1377472387. The next prime is 1377472429. The reversal of 1377472417 is 7142747731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869601121 + 507871296 = 29489^2 + 22536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377472417 - 2⁷ = 1377472289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1377472517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688736208 + 688736209.

It is an arithmetic number, because the mean of its divisors is an integer number (688736209).

Almost surely, 2^1377472417 is an apocalyptic number.

It is an amenable number.

1377472417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377472417 is an equidigital number, since it uses as much as digits as its factorization.

1377472417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230496, while the sum is 43.

The square root of 1377472417 is about 37114.3155264919. The cubic root of 1377472417 is about 1112.6561439212.

The spelling of 1377472417 in words is "one billion, three hundred seventy-seven million, four hundred seventy-two thousand, four hundred seventeen".