353439990 has 64 divisors (see below), whose sum is σ = 972933120. Its totient is φ = 91208160.

The previous prime is 353439943. The next prime is 353439997. The reversal of 353439990 is 99934353.

353439990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353439997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12744 + ... + 29483.

It is an arithmetic number, because the mean of its divisors is an integer number (15202080).

Almost surely, 2^353439990 is an apocalyptic number.

353439990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

353439990 is an abundant number, since it is smaller than the sum of its proper divisors (619493130).

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

353439990 is a wasteful number, since it uses less digits than its factorization.

353439990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42274 (or 42268 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 45.

The square root of 353439990 is about 18799.9997340426. Note that the first 3 decimals coincide. The cubic root of 353439990 is about 707.0311727068.

The spelling of 353439990 in words is "three hundred fifty-three million, four hundred thirty-nine thousand, nine hundred ninety".