402629 has 4 divisors (see below), whose sum is σ = 423840. Its totient is φ = 381420.

The previous prime is 402613. The next prime is 402631. The reversal of 402629 is 926204.

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 402629 - 2⁴ = 402613 is a prime.

It is a super-2 number, since 2×402629² = 324220223282, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10577 + ... + 10614.

It is an arithmetic number, because the mean of its divisors is an integer number (105960).

2⁴⁰²⁶²⁹ is an apocalyptic number.

It is an amenable number.

402629 is a deficient number, since it is larger than the sum of its proper divisors (21211).

402629 is a wasteful number, since it uses less digits than its factorization.

402629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 402629 is about 634.5305351203. The cubic root of 402629 is about 73.8416995900.

The spelling of 402629 in words is "four hundred two thousand, six hundred twenty-nine".