536402309 has 4 divisors (see below), whose sum is σ = 567955404. Its totient is φ = 504849216.

The previous prime is 536402291. The next prime is 536402327. The reversal of 536402309 is 903204635.

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

It is an interprime number because it is at equal distance from previous prime (536402291) and next prime (536402327).

It can be written as a sum of positive squares in 2 ways, for example, as 281904100 + 254498209 = 16790^2 + 15953^2 .

It is a cyclic number.

It is not a de Polignac number, because 536402309 - 2²⁰ = 535353733 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 (536402359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15776522 + ... + 15776555.

It is an arithmetic number, because the mean of its divisors is an integer number (141988851).

Almost surely, 2^536402309 is an apocalyptic number.

It is an amenable number.

536402309 is a deficient number, since it is larger than the sum of its proper divisors (31553095).

536402309 is a wasteful number, since it uses less digits than its factorization.

536402309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31553094.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 536402309 is about 23160.3607268972. The cubic root of 536402309 is about 812.5128027647.

The spelling of 536402309 in words is "five hundred thirty-six million, four hundred two thousand, three hundred nine".