487957091 has 2 divisors, whose sum is σ = 487957092. Its totient is φ = 487957090.

The previous prime is 487957087. The next prime is 487957097. The reversal of 487957091 is 190759784.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 487957091 - 2² = 487957087 is a prime.

It is not a weakly prime, because it can be changed into another prime (487957097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243978545 + 243978546.

It is an arithmetic number, because the mean of its divisors is an integer number (243978546).

Almost surely, 2^487957091 is an apocalyptic number.

487957091 is a deficient number, since it is larger than the sum of its proper divisors (1).

487957091 is an equidigital number, since it uses as much as digits as its factorization.

487957091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 487957091 is about 22089.7508134429. The cubic root of 487957091 is about 787.2763606493.

The spelling of 487957091 in words is "four hundred eighty-seven million, nine hundred fifty-seven thousand, ninety-one".