20954799 has 6 divisors (see below), whose sum is σ = 30268056. Its totient is φ = 13969860.

The previous prime is 20954779. The next prime is 20954807. The reversal of 20954799 is 99745902.

It is not a de Polignac number, because 20954799 - 2¹¹ = 20952751 is a prime.

It is a super-2 number, since 2×20954799² = 878207202260802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20954749) 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 5 ways as a sum of consecutive naturals, for example, 1164147 + ... + 1164164.

It is an arithmetic number, because the mean of its divisors is an integer number (5044676).

Almost surely, 2^20954799 is an apocalyptic number.

20954799 is a deficient number, since it is larger than the sum of its proper divisors (9313257).

20954799 is a wasteful number, since it uses less digits than its factorization.

20954799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328317 (or 2328314 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 20954799 is about 4577.6412048128. The cubic root of 20954799 is about 275.6943292055.

The spelling of 20954799 in words is "twenty million, nine hundred fifty-four thousand, seven hundred ninety-nine".