402447046 has 4 divisors (see below), whose sum is σ = 603670572. Its totient is φ = 201223522.

The previous prime is 402447043. The next prime is 402447047. The reversal of 402447046 is 640744204.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×402447046² = 323927249668252232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402446999 and 402447017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402447043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611760 + ... + 100611763.

It is an arithmetic number, because the mean of its divisors is an integer number (150917643).

Almost surely, 2^402447046 is an apocalyptic number.

402447046 is a deficient number, since it is larger than the sum of its proper divisors (201223526).

402447046 is a wasteful number, since it uses less digits than its factorization.

402447046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201223525.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 402447046 is about 20061.0828720685. The cubic root of 402447046 is about 738.3057452858.

The spelling of 402447046 in words is "four hundred two million, four hundred forty-seven thousand, forty-six".