19969953 has 16 divisors (see below), whose sum is σ = 27414336. Its totient is φ = 12925440.

The previous prime is 19969913. The next prime is 19969979. The reversal of 19969953 is 35996991.

It is not a de Polignac number, because 19969953 - 2¹⁴ = 19953569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19969896 and 19969905.

It is not an unprimeable number, because it can be changed into a prime (19969913) 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, 13993 + ... + 15353.

It is an arithmetic number, because the mean of its divisors is an integer number (1713396).

Almost surely, 2^19969953 is an apocalyptic number.

It is an amenable number.

19969953 is a deficient number, since it is larger than the sum of its proper divisors (7444383).

19969953 is a wasteful number, since it uses less digits than its factorization.

19969953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504.

The product of its digits is 590490, while the sum is 51.

The square root of 19969953 is about 4468.7753355925. The cubic root of 19969953 is about 271.3057600192.

The spelling of 19969953 in words is "nineteen million, nine hundred sixty-nine thousand, nine hundred fifty-three".