3238405947 has 64 divisors (see below), whose sum is σ = 5626091520. Its totient is φ = 1802736000.

The previous prime is 3238405943. The next prime is 3238405949. The reversal of 3238405947 is 7495048323.

3238405947 is a `hidden beast` number, since 3 + 238 + 405 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 3238405947 - 2² = 3238405943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3238405943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1511497 + ... + 1513637.

It is an arithmetic number, because the mean of its divisors is an integer number (87907680).

Almost surely, 2^3238405947 is an apocalyptic number.

3238405947 is a deficient number, since it is larger than the sum of its proper divisors (2387685573).

3238405947 is a wasteful number, since it uses less digits than its factorization.

3238405947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2355 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 3238405947 is about 56906.9938320414. The cubic root of 3238405947 is about 1479.4845336322.

The spelling of 3238405947 in words is "three billion, two hundred thirty-eight million, four hundred five thousand, nine hundred forty-seven".