1504489897 has 2 divisors, whose sum is σ = 1504489898. Its totient is φ = 1504489896.

The previous prime is 1504489849. The next prime is 1504489907. The reversal of 1504489897 is 7989844051.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413459216 + 91030681 = 37596^2 + 9541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1504489897 - 2⁷ = 1504489769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1504489397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752244948 + 752244949.

It is an arithmetic number, because the mean of its divisors is an integer number (752244949).

Almost surely, 2^1504489897 is an apocalyptic number.

It is an amenable number.

1504489897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1504489897 is an equidigital number, since it uses as much as digits as its factorization.

1504489897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1504489897 is about 38787.7544722558. The cubic root of 1504489897 is about 1145.8552490965.

It can be divided in two parts, 1504 and 489897, that added together give a square (491401 = 701²).

The spelling of 1504489897 in words is "one billion, five hundred four million, four hundred eighty-nine thousand, eight hundred ninety-seven".