4391400487 has 4 divisors (see below), whose sum is σ = 4542828120. Its totient is φ = 4239972856.

The previous prime is 4391400439. The next prime is 4391400493. The reversal of 4391400487 is 7840041934.

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

It is a cyclic number.

It is not a de Polignac number, because 4391400487 - 2²³ = 4383011879 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391407487) 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, 75713773 + ... + 75713830.

It is an arithmetic number, because the mean of its divisors is an integer number (1135707030).

Almost surely, 2^4391400487 is an apocalyptic number.

4391400487 is a deficient number, since it is larger than the sum of its proper divisors (151427633).

4391400487 is a wasteful number, since it uses less digits than its factorization.

4391400487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151427632.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 4391400487 is about 66267.6428357007. The cubic root of 4391400487 is about 1637.5743049785.

The spelling of 4391400487 in words is "four billion, three hundred ninety-one million, four hundred thousand, four hundred eighty-seven".