471451987 has 4 divisors (see below), whose sum is σ = 473529096. Its totient is φ = 469374880.

The previous prime is 471451969. The next prime is 471451991. The reversal of 471451987 is 789154174.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789154174 = 2 ⋅394577087.

It is a cyclic number.

It is not a de Polignac number, because 471451987 - 2¹⁵ = 471419219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (471452987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038214 + ... + 1038667.

It is an arithmetic number, because the mean of its divisors is an integer number (118382274).

Almost surely, 2^471451987 is an apocalyptic number.

471451987 is a deficient number, since it is larger than the sum of its proper divisors (2077109).

471451987 is a wasteful number, since it uses less digits than its factorization.

471451987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077108.

The product of its digits is 282240, while the sum is 46.

The square root of 471451987 is about 21712.9451479987. The cubic root of 471451987 is about 778.2978370108.

The spelling of 471451987 in words is "four hundred seventy-one million, four hundred fifty-one thousand, nine hundred eighty-seven".