47387402 has 4 divisors (see below), whose sum is σ = 71081106. Its totient is φ = 23693700.

The previous prime is 47387401. The next prime is 47387413. The reversal of 47387402 is 20478374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38925121 + 8462281 = 6239^2 + 2909^2 .

It is not an unprimeable number, because it can be changed into a prime (47387401) by changing a digit.

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 as a sum of consecutive naturals, namely, 11846849 + ... + 11846852.

Almost surely, 2^47387402 is an apocalyptic number.

47387402 is a deficient number, since it is larger than the sum of its proper divisors (23693704).

47387402 is a wasteful number, since it uses less digits than its factorization.

47387402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23693703.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 47387402 is about 6883.8508118640. The cubic root of 47387402 is about 361.8714326257.

The spelling of 47387402 in words is "forty-seven million, three hundred eighty-seven thousand, four hundred two".