422987513 has 8 divisors (see below), whose sum is σ = 455727048. Its totient is φ = 390276864.

The previous prime is 422987507. The next prime is 422987527. The reversal of 422987513 is 315789224.

It can be written as a sum of positive squares in 4 ways, for example, as 68343289 + 354644224 = 8267^2 + 18832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422987513 - 2⁴ = 422987497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422987713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30545 + ... + 42177.

It is an arithmetic number, because the mean of its divisors is an integer number (56965881).

Almost surely, 2^422987513 is an apocalyptic number.

It is an amenable number.

422987513 is a deficient number, since it is larger than the sum of its proper divisors (32739535).

422987513 is a wasteful number, since it uses less digits than its factorization.

422987513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443.

The product of its digits is 120960, while the sum is 41.

The square root of 422987513 is about 20566.6602296046. The cubic root of 422987513 is about 750.6586882999.

The spelling of 422987513 in words is "four hundred twenty-two million, nine hundred eighty-seven thousand, five hundred thirteen".