920471487 has 8 divisors (see below), whose sum is σ = 1321702704. Its totient is φ = 566443968.

The previous prime is 920471471. The next prime is 920471491. The reversal of 920471487 is 784174029.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 920471487 - 2⁴ = 920471471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920471407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11800878 + ... + 11800955.

It is an arithmetic number, because the mean of its divisors is an integer number (165212838).

Almost surely, 2^920471487 is an apocalyptic number.

920471487 is a deficient number, since it is larger than the sum of its proper divisors (401231217).

920471487 is a wasteful number, since it uses less digits than its factorization.

920471487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23601849.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 920471487 is about 30339.2730137029. The cubic root of 920471487 is about 972.7549438546.

The spelling of 920471487 in words is "nine hundred twenty million, four hundred seventy-one thousand, four hundred eighty-seven".