490872149 has 2 divisors, whose sum is σ = 490872150. Its totient is φ = 490872148.

The previous prime is 490872143. The next prime is 490872157. The reversal of 490872149 is 941278094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413308900 + 77563249 = 20330^2 + 8807^2 .

It is a cyclic number.

It is not a de Polignac number, because 490872149 - 2²⁰ = 489823573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490872143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245436074 + 245436075.

It is an arithmetic number, because the mean of its divisors is an integer number (245436075).

Almost surely, 2^490872149 is an apocalyptic number.

It is an amenable number.

490872149 is a deficient number, since it is larger than the sum of its proper divisors (1).

490872149 is an equidigital number, since it uses as much as digits as its factorization.

490872149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 490872149 is about 22155.6347009062. The cubic root of 490872149 is about 788.8409800092.

The spelling of 490872149 in words is "four hundred ninety million, eight hundred seventy-two thousand, one hundred forty-nine".