43421390390 has 32 divisors (see below), whose sum is σ = 91224520704. Its totient is φ = 14570580960.

The previous prime is 43421390381. The next prime is 43421390407. The reversal of 43421390390 is 9309312434.

It is a happy number.

43421390390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6595706 + ... + 6602285.

It is an arithmetic number, because the mean of its divisors is an integer number (2850766272).

Almost surely, 2^43421390390 is an apocalyptic number.

43421390390 is an abundant number, since it is smaller than the sum of its proper divisors (47803130314).

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

43421390390 is a wasteful number, since it uses less digits than its factorization.

43421390390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13198052.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 43421390390 in words is "forty-three billion, four hundred twenty-one million, three hundred ninety thousand, three hundred ninety".