402487559 has 4 divisors (see below), whose sum is σ = 408494904. Its totient is φ = 396480216.

The previous prime is 402487537. The next prime is 402487567. The reversal of 402487559 is 955784204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402487559 - 2¹⁶ = 402422023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402487159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003572 + ... + 3003705.

It is an arithmetic number, because the mean of its divisors is an integer number (102123726).

Almost surely, 2^402487559 is an apocalyptic number.

402487559 is a deficient number, since it is larger than the sum of its proper divisors (6007345).

402487559 is an equidigital number, since it uses as much as digits as its factorization.

402487559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007344.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 402487559 is about 20062.0925877636. The cubic root of 402487559 is about 738.3305187124.

The spelling of 402487559 in words is "four hundred two million, four hundred eighty-seven thousand, five hundred fifty-nine".