390450424 has 96 divisors (see below), whose sum is σ = 971293680. Its totient is φ = 145345536.

The previous prime is 390450419. The next prime is 390450427. The reversal of 390450424 is 424054093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390450427) 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, 84379 + ... + 88885.

Almost surely, 2^390450424 is an apocalyptic number.

390450424 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390450424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485646840).

390450424 is an abundant number, since it is smaller than the sum of its proper divisors (580843256).

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

390450424 is a wasteful number, since it uses less digits than its factorization.

390450424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557 (or 4546 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 390450424 is about 19759.8184202183. The cubic root of 390450424 is about 730.8955194846.

The spelling of 390450424 in words is "three hundred ninety million, four hundred fifty thousand, four hundred twenty-four".