402054009 has 8 divisors (see below), whose sum is σ = 612653760. Its totient is φ = 229745136.

The previous prime is 402053983. The next prime is 402054017. The reversal of 402054009 is 900450204.

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

It is not a de Polignac number, because 402054009 - 2⁸ = 402053753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402054009.

It is not an unprimeable number, because it can be changed into a prime (402054209) 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, 9572694 + ... + 9572735.

It is an arithmetic number, because the mean of its divisors is an integer number (76581720).

Almost surely, 2^402054009 is an apocalyptic number.

It is an amenable number.

402054009 is a deficient number, since it is larger than the sum of its proper divisors (210599751).

402054009 is a wasteful number, since it uses less digits than its factorization.

402054009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19145439.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 402054009 is about 20051.2844725718. The cubic root of 402054009 is about 738.0653194585.

The spelling of 402054009 in words is "four hundred two million, fifty-four thousand, nine".