469155139 has 2 divisors, whose sum is σ = 469155140. Its totient is φ = 469155138.

The previous prime is 469155133. The next prime is 469155143. The reversal of 469155139 is 931551964.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 469155139 - 2³ = 469155131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 469155095 and 469155104.

It is not a weakly prime, because it can be changed into another prime (469155131) 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, 234577569 + 234577570.

It is an arithmetic number, because the mean of its divisors is an integer number (234577570).

Almost surely, 2^469155139 is an apocalyptic number.

469155139 is a deficient number, since it is larger than the sum of its proper divisors (1).

469155139 is an equidigital number, since it uses as much as digits as its factorization.

469155139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 469155139 is about 21659.9893582615. The cubic root of 469155139 is about 777.0318595672.

The spelling of 469155139 in words is "four hundred sixty-nine million, one hundred fifty-five thousand, one hundred thirty-nine".