402469 has 4 divisors (see below), whose sum is σ = 408544. Its totient is φ = 396396.

The previous prime is 402443. The next prime is 402487. The reversal of 402469 is 964204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402469 - 2⁷ = 402341 is a prime.

It is a super-2 number, since 2×402469² = 323962591922, which contains 22 as substring.

It is a Duffinian number.

402469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402419) 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 3 ways as a sum of consecutive naturals, for example, 2937 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (102136).

2⁴⁰²⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

402469 is a deficient number, since it is larger than the sum of its proper divisors (6075).

402469 is an equidigital number, since it uses as much as digits as its factorization.

402469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 402469 is about 634.4044451294. The cubic root of 402469 is about 73.8319170215.

The spelling of 402469 in words is "four hundred two thousand, four hundred sixty-nine".