20049699 has 4 divisors (see below), whose sum is σ = 26732936. Its totient is φ = 13366464.

The previous prime is 20049649. The next prime is 20049709. The reversal of 20049699 is 99694002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20049699 - 2⁷ = 20049571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20049649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3341614 + ... + 3341619.

It is an arithmetic number, because the mean of its divisors is an integer number (6683234).

Almost surely, 2^20049699 is an apocalyptic number.

20049699 is a deficient number, since it is larger than the sum of its proper divisors (6683237).

20049699 is an equidigital number, since it uses as much as digits as its factorization.

20049699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683236.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 20049699 is about 4477.6890244857. The cubic root of 20049699 is about 271.6664154129. Note that the first 3 decimals are identical.

The spelling of 20049699 in words is "twenty million, forty-nine thousand, six hundred ninety-nine".