402444452 has 12 divisors (see below), whose sum is σ = 707226240. Its totient is φ = 200379816.

The previous prime is 402444443. The next prime is 402444461. The reversal of 402444452 is 254444204.

It is an interprime number because it is at equal distance from previous prime (402444443) and next prime (402444461).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209528 + ... + 211439.

It is an arithmetic number, because the mean of its divisors is an integer number (58935520).

Almost surely, 2^402444452 is an apocalyptic number.

It is an amenable number.

402444452 is a deficient number, since it is larger than the sum of its proper divisors (304781788).

402444452 is a wasteful number, since it uses less digits than its factorization.

402444452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421210 (or 421208 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

The square root of 402444452 is about 20061.0182194225. The cubic root of 402444452 is about 738.3041590156.

Adding to 402444452 its reverse (254444204), we get a palindrome (656888656).

The spelling of 402444452 in words is "four hundred two million, four hundred forty-four thousand, four hundred fifty-two".