402388029 has 12 divisors (see below), whose sum is σ = 599976832. Its totient is φ = 259605000.

The previous prime is 402387949. The next prime is 402388039. The reversal of 402388029 is 920883204.

It is not a de Polignac number, because 402388029 - 2¹¹ = 402385981 is a prime.

It is a super-2 number, since 2×402388029² = 323832251765009682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402387984 and 402388002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402388039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 720847 + ... + 721404.

Almost surely, 2^402388029 is an apocalyptic number.

It is an amenable number.

402388029 is a deficient number, since it is larger than the sum of its proper divisors (197588803).

402388029 is a wasteful number, since it uses less digits than its factorization.

402388029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442288 (or 1442285 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 402388029 is about 20059.6118855774. The cubic root of 402388029 is about 738.2696538127.

The spelling of 402388029 in words is "four hundred two million, three hundred eighty-eight thousand, twenty-nine".