38946440 has 32 divisors (see below), whose sum is σ = 94371480. Its totient is φ = 14380032.

The previous prime is 38946437. The next prime is 38946493. The reversal of 38946440 is 4464983.

It can be written as a sum of positive squares in 4 ways, for example, as 10023556 + 28922884 = 3166^2 + 5378^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38946394 and 38946403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36929 + ... + 37968.

Almost surely, 2^38946440 is an apocalyptic number.

It is an amenable number.

38946440 is an abundant number, since it is smaller than the sum of its proper divisors (55425040).

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

38946440 is a wasteful number, since it uses less digits than its factorization.

38946440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74921 (or 74917 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 38946440 is about 6240.7082931347. The cubic root of 38946440 is about 338.9658310569.

The spelling of 38946440 in words is "thirty-eight million, nine hundred forty-six thousand, four hundred forty".