349421972 has 6 divisors (see below), whose sum is σ = 611488458. Its totient is φ = 174710984.

The previous prime is 349421971. The next prime is 349421981. The reversal of 349421972 is 279124943.

It can be written as a sum of positive squares in only one way, i.e., 199261456 + 150160516 = 14116^2 + 12254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349421971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43677743 + ... + 43677750.

It is an arithmetic number, because the mean of its divisors is an integer number (101914743).

Almost surely, 2^349421972 is an apocalyptic number.

It is an amenable number.

349421972 is a deficient number, since it is larger than the sum of its proper divisors (262066486).

349421972 is a wasteful number, since it uses less digits than its factorization.

349421972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87355497 (or 87355495 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 349421972 is about 18692.8321021722. The cubic root of 349421972 is about 704.3417036308.

The spelling of 349421972 in words is "three hundred forty-nine million, four hundred twenty-one thousand, nine hundred seventy-two".