47290438 has 32 divisors (see below), whose sum is σ = 82317312. Its totient is φ = 20196000.

The previous prime is 47290393. The next prime is 47290457. The reversal of 47290438 is 83409274.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47290397 and 47290406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17263 + ... + 19813.

It is an arithmetic number, because the mean of its divisors is an integer number (2572416).

Almost surely, 2^47290438 is an apocalyptic number.

47290438 is a deficient number, since it is larger than the sum of its proper divisors (35026874).

47290438 is a wasteful number, since it uses less digits than its factorization.

47290438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 47290438 is about 6876.8043450428. The cubic root of 47290438 is about 361.6244439042.

The spelling of 47290438 in words is "forty-seven million, two hundred ninety thousand, four hundred thirty-eight".