349522720440 has 32 divisors (see below), whose sum is σ = 1048568161680. Its totient is φ = 93206058752.

The previous prime is 349522720427. The next prime is 349522720447. The reversal of 349522720440 is 44027225943.

It is a super-2 number, since 2×349522720440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 349522720392 and 349522720401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349522720447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456344549 + ... + 1456344788.

Almost surely, 2^349522720440 is an apocalyptic number.

349522720440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349522720440 is an abundant number, since it is smaller than the sum of its proper divisors (699045441240).

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

349522720440 is a wasteful number, since it uses less digits than its factorization.

349522720440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912689351 (or 2912689347 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 349522720440 in words is "three hundred forty-nine billion, five hundred twenty-two million, seven hundred twenty thousand, four hundred forty".