39948311 has 4 divisors (see below), whose sum is σ = 43021272. Its totient is φ = 36875352.

The previous prime is 39948299. The next prime is 39948323. The reversal of 39948311 is 11384993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11384993 = 467 ⋅24379.

It is an interprime number because it is at equal distance from previous prime (39948299) and next prime (39948323).

It is a cyclic number.

It is not a de Polignac number, because 39948311 - 2¹⁰ = 39947287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39948331) 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, 1536461 + ... + 1536486.

It is an arithmetic number, because the mean of its divisors is an integer number (10755318).

Almost surely, 2^39948311 is an apocalyptic number.

39948311 is a deficient number, since it is larger than the sum of its proper divisors (3072961).

39948311 is a wasteful number, since it uses less digits than its factorization.

39948311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072960.

The product of its digits is 23328, while the sum is 38.

The square root of 39948311 is about 6320.4676251050. The cubic root of 39948311 is about 341.8478142587.

The spelling of 39948311 in words is "thirty-nine million, nine hundred forty-eight thousand, three hundred eleven".