402825729 has 8 divisors (see below), whose sum is σ = 538196832. Its totient is φ = 268002560.

The previous prime is 402825719. The next prime is 402825737. The reversal of 402825729 is 927528204.

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 402825729 - 2⁴ = 402825713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402825719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135264 + ... + 138209.

It is an arithmetic number, because the mean of its divisors is an integer number (67274604).

Almost surely, 2^402825729 is an apocalyptic number.

It is an amenable number.

402825729 is a deficient number, since it is larger than the sum of its proper divisors (135371103).

402825729 is a wasteful number, since it uses less digits than its factorization.

402825729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273967.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 402825729 is about 20070.5189021111. The cubic root of 402825729 is about 738.5372425652.

The spelling of 402825729 in words is "four hundred two million, eight hundred twenty-five thousand, seven hundred twenty-nine".