19970929 has 6 divisors (see below), whose sum is σ = 21951650. Its totient is φ = 18155280.

The previous prime is 19970897. The next prime is 19970941. The reversal of 19970929 is 92907991.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 123904 = 4455^2 + 352^2 .

It is not a de Polignac number, because 19970929 - 2⁵ = 19970897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19970959) 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 in 5 ways as a sum of consecutive naturals, for example, 82404 + ... + 82645.

Almost surely, 2^19970929 is an apocalyptic number.

It is an amenable number.

19970929 is a deficient number, since it is larger than the sum of its proper divisors (1980721).

19970929 is a wasteful number, since it uses less digits than its factorization.

19970929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165071 (or 165060 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 19970929 is about 4468.8845364364. The cubic root of 19970929 is about 271.3101798277.

The spelling of 19970929 in words is "nineteen million, nine hundred seventy thousand, nine hundred twenty-nine".