354980394 has 80 divisors (see below), whose sum is σ = 822238560. Its totient is φ = 114397920.

The previous prime is 354980389. The next prime is 354980429. The reversal of 354980394 is 493089453.

It is a happy number.

It is a super-2 number, since 2×354980394² = 252022160248790472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 912352 + ... + 912740.

It is an arithmetic number, because the mean of its divisors is an integer number (10277982).

Almost surely, 2^354980394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354980394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411119280).

354980394 is an abundant number, since it is smaller than the sum of its proper divisors (467258166).

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

354980394 is a wasteful number, since it uses less digits than its factorization.

354980394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 354980394 is about 18840.9233850149. The cubic root of 354980394 is about 708.0568397343.

The spelling of 354980394 in words is "three hundred fifty-four million, nine hundred eighty thousand, three hundred ninety-four".