349498140 has 48 divisors (see below), whose sum is σ = 1012344480. Its totient is φ = 89985280.

The previous prime is 349498073. The next prime is 349498147. The reversal of 349498140 is 41894943.

It is a junction number, because it is equal to n+sod(n) for n = 349498092 and 349498101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349498147) 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, 98691 + ... + 102170.

It is an arithmetic number, because the mean of its divisors is an integer number (21090510).

Almost surely, 2^349498140 is an apocalyptic number.

349498140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349498140 is an abundant number, since it is smaller than the sum of its proper divisors (662846340).

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

349498140 is a wasteful number, since it uses less digits than its factorization.

349498140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200902 (or 200900 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 349498140 is about 18694.8693496371. The cubic root of 349498140 is about 704.3928780517.

The spelling of 349498140 in words is "three hundred forty-nine million, four hundred ninety-eight thousand, one hundred forty".