402033009 has 16 divisors (see below), whose sum is σ = 629180288. Its totient is φ = 223523712.

The previous prime is 402033007. The next prime is 402033011. The reversal of 402033009 is 900330204.

It is an interprime number because it is at equal distance from previous prime (402033007) and next prime (402033011).

It is not a de Polignac number, because 402033009 - 2¹ = 402033007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402033001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257932 + ... + 259485.

It is an arithmetic number, because the mean of its divisors is an integer number (39323768).

Almost surely, 2^402033009 is an apocalyptic number.

It is an amenable number.

402033009 is a deficient number, since it is larger than the sum of its proper divisors (227147279).

402033009 is a wasteful number, since it uses less digits than its factorization.

402033009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517464.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 402033009 is about 20050.7608085080. The cubic root of 402033009 is about 738.0524690775.

The spelling of 402033009 in words is "four hundred two million, thirty-three thousand, nine".