20439095 has 8 divisors (see below), whose sum is σ = 24551664. Its totient is φ = 16334784.

The previous prime is 20439077. The next prime is 20439103. The reversal of 20439095 is 59093402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20439095 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7052 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (3068958).

Almost surely, 2^20439095 is an apocalyptic number.

20439095 is a deficient number, since it is larger than the sum of its proper divisors (4112569).

20439095 is a wasteful number, since it uses less digits than its factorization.

20439095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20439095 is about 4520.9617339677. The cubic root of 20439095 is about 273.4138775457.

The spelling of 20439095 in words is "twenty million, four hundred thirty-nine thousand, ninety-five".