39474440 has 64 divisors (see below), whose sum is σ = 93778560. Its totient is φ = 14924800.

The previous prime is 39474427. The next prime is 39474443. The reversal of 39474440 is 4447493.

It is a happy number.

39474440 is nontrivially palindromic in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 39474440.

It is not an unprimeable number, because it can be changed into a prime (39474443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98240 + ... + 98640.

It is an arithmetic number, because the mean of its divisors is an integer number (1465290).

Almost surely, 2^39474440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39474440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46889280).

39474440 is an abundant number, since it is smaller than the sum of its proper divisors (54304120).

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

39474440 is a wasteful number, since it uses less digits than its factorization.

39474440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 39474440 is about 6282.8687715088. The cubic root of 39474440 is about 340.4907561228.

The spelling of 39474440 in words is "thirty-nine million, four hundred seventy-four thousand, four hundred forty".