394452450 has 288 divisors, whose sum is σ = 1297684800. Its totient is φ = 87816960.

The previous prime is 394452391. The next prime is 394452467. The reversal of 394452450 is 54254493.

It is a happy number.

It is a super-2 number, since 2×394452450² = 311185470622005000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4432006 + ... + 4432094.

It is an arithmetic number, because the mean of its divisors is an integer number (4505850).

Almost surely, 2^394452450 is an apocalyptic number.

394452450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 394452450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648842400).

394452450 is an abundant number, since it is smaller than the sum of its proper divisors (903232350).

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

394452450 is a wasteful number, since it uses less digits than its factorization.

394452450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 394452450 is about 19860.8270220552. The cubic root of 394452450 is about 733.3842056077.

The spelling of 394452450 in words is "three hundred ninety-four million, four hundred fifty-two thousand, four hundred fifty".