1379501947 has 2 divisors, whose sum is σ = 1379501948. Its totient is φ = 1379501946.

The previous prime is 1379501881. The next prime is 1379501971. The reversal of 1379501947 is 7491059731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1379501947 - 2⁷ = 1379501819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1379501897 and 1379501906.

It is not a weakly prime, because it can be changed into another prime (1379501647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689750973 + 689750974.

It is an arithmetic number, because the mean of its divisors is an integer number (689750974).

Almost surely, 2^1379501947 is an apocalyptic number.

1379501947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379501947 is an equidigital number, since it uses as much as digits as its factorization.

1379501947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 1379501947 is about 37141.6470690248. The cubic root of 1379501947 is about 1113.2023280919.

The spelling of 1379501947 in words is "one billion, three hundred seventy-nine million, five hundred one thousand, nine hundred forty-seven".