402297440436 has 36 divisors (see below), whose sum is σ = 1016978717664. Its totient is φ = 134091210000.

The previous prime is 402297440431. The next prime is 402297440453. The reversal of 402297440436 is 634044792204.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 402297440391 and 402297440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402297440431) 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, 302611 + ... + 946661.

It is an arithmetic number, because the mean of its divisors is an integer number (28249408824).

Almost surely, 2^402297440436 is an apocalyptic number.

It is an amenable number.

402297440436 is an abundant number, since it is smaller than the sum of its proper divisors (614681277228).

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

402297440436 is a wasteful number, since it uses less digits than its factorization.

402297440436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661412 (or 661407 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 402297440436 in words is "four hundred two billion, two hundred ninety-seven million, four hundred forty thousand, four hundred thirty-six".