20149059 has 8 divisors (see below), whose sum is σ = 30703360. Its totient is φ = 11513736.

The previous prime is 20149049. The next prime is 20149061. The reversal of 20149059 is 95094102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20149059 - 2⁴ = 20149043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20149009) 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 7 ways as a sum of consecutive naturals, for example, 479719 + ... + 479760.

It is an arithmetic number, because the mean of its divisors is an integer number (3837920).

Almost surely, 2^20149059 is an apocalyptic number.

20149059 is a deficient number, since it is larger than the sum of its proper divisors (10554301).

20149059 is an equidigital number, since it uses as much as digits as its factorization.

20149059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959489.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20149059 is about 4488.7703215914. The cubic root of 20149059 is about 272.1144405621.

The spelling of 20149059 in words is "twenty million, one hundred forty-nine thousand, fifty-nine".