39914009 has 4 divisors (see below), whose sum is σ = 40992804. Its totient is φ = 38835216.

The previous prime is 39913987. The next prime is 39914029. The reversal of 39914009 is 90041993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90041993 = 8923 ⋅10091.

It can be written as a sum of positive squares in 2 ways, for example, as 28858384 + 11055625 = 5372^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 39914009 - 2¹² = 39909913 is a prime.

It is a super-2 number, since 2×39914009² = 3186256228904162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39914009.

It is not an unprimeable number, because it can be changed into a prime (39914029) 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, 539342 + ... + 539415.

It is an arithmetic number, because the mean of its divisors is an integer number (10248201).

Almost surely, 2^39914009 is an apocalyptic number.

It is an amenable number.

39914009 is a deficient number, since it is larger than the sum of its proper divisors (1078795).

39914009 is a wasteful number, since it uses less digits than its factorization.

39914009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078794.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 39914009 is about 6317.7534773050. The cubic root of 39914009 is about 341.7499426068.

It can be divided in two parts, 3991 and 4009, that added together give a cube (8000 = 20³).

The spelling of 39914009 in words is "thirty-nine million, nine hundred fourteen thousand, nine".