402925329 has 9 divisors (see below), whose sum is σ = 582090249. Its totient is φ = 268576740.

The previous prime is 402925309. The next prime is 402925349. The reversal of 402925329 is 923529204.

The square root of 402925329 is 20073.

It is a perfect power (a square), and thus also a powerful number.

402925329 is a `hidden beast` number, since 40 + 292 + 5 + 329 = 666.

It is an interprime number because it is at equal distance from previous prime (402925309) and next prime (402925349).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 402925329 - 2⁹ = 402924817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402925293 and 402925302.

It is not an unprimeable number, because it can be changed into a prime (402925309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56874 + ... + 63564.

Almost surely, 2^402925329 is an apocalyptic number.

402925329 is the 20073-rd square number.

402925329 is the 10037-th centered octagonal number.

It is an amenable number.

402925329 is a deficient number, since it is larger than the sum of its proper divisors (179164920).

402925329 is an frugal number, since it uses more digits than its factorization.

402925329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388 (or 6694 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The cubic root of 402925329 is about 738.5981061450.

Multiplying 402925329 by its sum of digits (36), we get a square (14505311844 = 120438²).

The spelling of 402925329 in words is "four hundred two million, nine hundred twenty-five thousand, three hundred twenty-nine".