491296149 has 6 divisors (see below), whose sum is σ = 709650006. Its totient is φ = 327530760.

The previous prime is 491296147. The next prime is 491296151. The reversal of 491296149 is 941692194.

491296149 is a `hidden beast` number, since 4 + 9 + 1 + 29 + 614 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (491296147) and next prime (491296151).

It can be written as a sum of positive squares in only one way, i.e., 353703249 + 137592900 = 18807^2 + 11730^2 .

It is not a de Polignac number, because 491296149 - 2¹ = 491296147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491296147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27294222 + ... + 27294239.

It is an arithmetic number, because the mean of its divisors is an integer number (118275001).

Almost surely, 2^491296149 is an apocalyptic number.

It is an amenable number.

491296149 is a deficient number, since it is larger than the sum of its proper divisors (218353857).

491296149 is a wasteful number, since it uses less digits than its factorization.

491296149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54588467 (or 54588464 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 491296149 is about 22165.2013074549. The cubic root of 491296149 is about 789.0680400296.

It can be divided in two parts, 49129 and 6149, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 491296149 in words is "four hundred ninety-one million, two hundred ninety-six thousand, one hundred forty-nine".