39948859 has 4 divisors (see below), whose sum is σ = 40336816. Its totient is φ = 39560904.

The previous prime is 39948847. The next prime is 39948869. The reversal of 39948859 is 95884993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95884993 = 1171 ⋅81883.

It is a cyclic number.

It is not a de Polignac number, because 39948859 - 2⁹ = 39948347 is a prime.

It is a super-2 number, since 2×39948859² = 3191822670803762, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (39948809) 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, 193824 + ... + 194029.

It is an arithmetic number, because the mean of its divisors is an integer number (10084204).

Almost surely, 2^39948859 is an apocalyptic number.

39948859 is a deficient number, since it is larger than the sum of its proper divisors (387957).

39948859 is a wasteful number, since it uses less digits than its factorization.

39948859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387956.

The product of its digits is 2799360, while the sum is 55.

The square root of 39948859 is about 6320.5109761791. The cubic root of 39948859 is about 341.8493773764.

The spelling of 39948859 in words is "thirty-nine million, nine hundred forty-eight thousand, eight hundred fifty-nine".