390429372438 has 96 divisors (see below), whose sum is σ = 1009202688000. Its totient is φ = 106659799488.

The previous prime is 390429372427. The next prime is 390429372467. The reversal of 390429372438 is 834273924093.

390429372438 is a `hidden beast` number, since 390 + 4 + 2 + 9 + 3 + 7 + 243 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7854888 + ... + 7904436.

It is an arithmetic number, because the mean of its divisors is an integer number (10512528000).

Almost surely, 2^390429372438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390429372438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504601344000).

390429372438 is an abundant number, since it is smaller than the sum of its proper divisors (618773315562).

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

390429372438 is a wasteful number, since it uses less digits than its factorization.

390429372438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52306 (or 52303 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 390429372438 in words is "three hundred ninety billion, four hundred twenty-nine million, three hundred seventy-two thousand, four hundred thirty-eight".