490999155 has 48 divisors (see below), whose sum is σ = 822345216. Its totient is φ = 250024320.

The previous prime is 490999133. The next prime is 490999163. The reversal of 490999155 is 551999094.

It is a happy number.

It is not a de Polignac number, because 490999155 - 2¹² = 490995059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 490999098 and 490999107.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1811670 + ... + 1811940.

It is an arithmetic number, because the mean of its divisors is an integer number (17132192).

Almost surely, 2^490999155 is an apocalyptic number.

490999155 is a deficient number, since it is larger than the sum of its proper divisors (331346061).

490999155 is a wasteful number, since it uses less digits than its factorization.

490999155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 51.

The square root of 490999155 is about 22158.5007389941. The cubic root of 490999155 is about 788.9090078370.

The spelling of 490999155 in words is "four hundred ninety million, nine hundred ninety-nine thousand, one hundred fifty-five".