394014780 has 288 divisors, whose sum is σ = 1386927360. Its totient is φ = 93312000.

The previous prime is 394014749. The next prime is 394014781. The reversal of 394014780 is 87410493.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394014781) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1569655 + ... + 1569905.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^394014780 is an apocalyptic number.

394014780 is a gapful number since it is divisible by the number (30) 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 394014780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693463680).

394014780 is an abundant number, since it is smaller than the sum of its proper divisors (992912580).

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

394014780 is a wasteful number, since it uses less digits than its factorization.

394014780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 394014780 is about 19849.8055406092. The cubic root of 394014780 is about 733.1128598012.

The spelling of 394014780 in words is "three hundred ninety-four million, fourteen thousand, seven hundred eighty".