402443301438 has 48 divisors (see below), whose sum is σ = 903125077920. Its totient is φ = 129364466112.

The previous prime is 402443301437. The next prime is 402443301461. The reversal of 402443301438 is 834103344204.

402443301438 is a `hidden beast` number, since 40 + 2 + 443 + 30 + 143 + 8 = 666.

It is a super-2 number, since 2×402443301438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402443301437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38781 + ... + 897992.

It is an arithmetic number, because the mean of its divisors is an integer number (18815105790).

Almost surely, 2^402443301438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402443301438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451562538960).

402443301438 is an abundant number, since it is smaller than the sum of its proper divisors (500681776482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402443301438 is a wasteful number, since it uses less digits than its factorization.

402443301438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937633 (or 937630 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 402443301438 in words is "four hundred two billion, four hundred forty-three million, three hundred one thousand, four hundred thirty-eight".