394835040 has 96 divisors (see below), whose sum is σ = 1381937760. Its totient is φ = 105288192.

The previous prime is 394835033. The next prime is 394835041. The reversal of 394835040 is 40538493.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 394834986 and 394835004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394835041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41379 + ... + 50018.

It is an arithmetic number, because the mean of its divisors is an integer number (14395185).

Almost surely, 2^394835040 is an apocalyptic number.

394835040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394835040 is an abundant number, since it is smaller than the sum of its proper divisors (987102720).

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

394835040 is a wasteful number, since it uses less digits than its factorization.

394835040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91421 (or 91407 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 394835040 is about 19870.4564617927. The cubic root of 394835040 is about 733.6212386529.

The spelling of 394835040 in words is "three hundred ninety-four million, eight hundred thirty-five thousand, forty".