438260390 has 16 divisors (see below), whose sum is σ = 791024832. Its totient is φ = 174825024.

The previous prime is 438260371. The next prime is 438260393. The reversal of 438260390 is 93062834.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 438260390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438260393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56039 + ... + 63378.

It is an arithmetic number, because the mean of its divisors is an integer number (49439052).

Almost surely, 2^438260390 is an apocalyptic number.

438260390 is a deficient number, since it is larger than the sum of its proper divisors (352764442).

438260390 is a wasteful number, since it uses less digits than its factorization.

438260390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119791.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 438260390 is about 20934.6695698786. The cubic root of 438260390 is about 759.5867963929.

The spelling of 438260390 in words is "four hundred thirty-eight million, two hundred sixty thousand, three hundred ninety".