47940338 has 4 divisors (see below), whose sum is σ = 71910510. Its totient is φ = 23970168.

The previous prime is 47940337. The next prime is 47940359. The reversal of 47940338 is 83304974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83304974 = 2 ⋅41652487.

It can be written as a sum of positive squares in only one way, i.e., 44528929 + 3411409 = 6673^2 + 1847^2 .

It is not an unprimeable number, because it can be changed into a prime (47940331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11985083 + ... + 11985086.

Almost surely, 2^47940338 is an apocalyptic number.

47940338 is a deficient number, since it is larger than the sum of its proper divisors (23970172).

47940338 is a wasteful number, since it uses less digits than its factorization.

47940338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970171.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 47940338 is about 6923.8961575113. The cubic root of 47940338 is about 363.2734824588.

The spelling of 47940338 in words is "forty-seven million, nine hundred forty thousand, three hundred thirty-eight".