398830792747 has 2 divisors, whose sum is σ = 398830792748. Its totient is φ = 398830792746.

The previous prime is 398830792691. The next prime is 398830792769. The reversal of 398830792747 is 747297038893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398830792747 is a prime.

It is not a weakly prime, because it can be changed into another prime (398830792777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199415396373 + 199415396374.

It is an arithmetic number, because the mean of its divisors is an integer number (199415396374).

Almost surely, 2^398830792747 is an apocalyptic number.

398830792747 is a deficient number, since it is larger than the sum of its proper divisors (1).

398830792747 is an equidigital number, since it uses as much as digits as its factorization.

398830792747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 67.

The spelling of 398830792747 in words is "three hundred ninety-eight billion, eight hundred thirty million, seven hundred ninety-two thousand, seven hundred forty-seven".