47478477 has 16 divisors (see below), whose sum is σ = 64214528. Its totient is φ = 31201200.

The previous prime is 47478427. The next prime is 47478479. The reversal of 47478477 is 77487474.

It is not a de Polignac number, because 47478477 - 2⁷ = 47478349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73518 + ... + 74160.

It is an arithmetic number, because the mean of its divisors is an integer number (4013408).

Almost surely, 2^47478477 is an apocalyptic number.

It is an amenable number.

47478477 is a deficient number, since it is larger than the sum of its proper divisors (16736051).

47478477 is a wasteful number, since it uses less digits than its factorization.

47478477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 1229312, while the sum is 48.

The square root of 47478477 is about 6890.4627565933. The cubic root of 47478477 is about 362.1031140991.

The spelling of 47478477 in words is "forty-seven million, four hundred seventy-eight thousand, four hundred seventy-seven".