490519391 has 2 divisors, whose sum is σ = 490519392. Its totient is φ = 490519390.

The previous prime is 490519387. The next prime is 490519433. The reversal of 490519391 is 193915094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490519391 - 2² = 490519387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490519301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245259695 + 245259696.

It is an arithmetic number, because the mean of its divisors is an integer number (245259696).

Almost surely, 2^490519391 is an apocalyptic number.

490519391 is a deficient number, since it is larger than the sum of its proper divisors (1).

490519391 is an equidigital number, since it uses as much as digits as its factorization.

490519391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 490519391 is about 22147.6723607697. The cubic root of 490519391 is about 788.6519717635.

The spelling of 490519391 in words is "four hundred ninety million, five hundred nineteen thousand, three hundred ninety-one".