39549960 has 96 divisors (see below), whose sum is σ = 130717080. Its totient is φ = 10368000.

The previous prime is 39549947. The next prime is 39549971. The reversal of 39549960 is 6994593.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12489156 + 27060804 = 3534^2 + 5202^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21060 + ... + 22860.

Almost surely, 2^39549960 is an apocalyptic number.

39549960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39549960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65358540).

39549960 is an abundant number, since it is smaller than the sum of its proper divisors (91167120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39549960 is a wasteful number, since it uses less digits than its factorization.

39549960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 39549960 is about 6288.8758931943. The cubic root of 39549960 is about 340.7077529210.

The spelling of 39549960 in words is "thirty-nine million, five hundred forty-nine thousand, nine hundred sixty".