9004925391 has 48 divisors (see below), whose sum is σ = 15264705792. Its totient is φ = 4621415040.

The previous prime is 9004925351. The next prime is 9004925399. The reversal of 9004925391 is 1935294009.

It is not a de Polignac number, because 9004925391 - 2¹⁹ = 9004401103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9004925399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189555 + ... + 232251.

It is an arithmetic number, because the mean of its divisors is an integer number (318014704).

Almost surely, 2^9004925391 is an apocalyptic number.

9004925391 is a deficient number, since it is larger than the sum of its proper divisors (6259780401).

9004925391 is a wasteful number, since it uses less digits than its factorization.

9004925391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42812 (or 42801 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 9004925391 is about 94894.2853442714. The cubic root of 9004925391 is about 2080.4632066725.

It can be divided in two parts, 90049 and 25391, that added together give a triangular number (115440 = T₄₈₀).

The spelling of 9004925391 in words is "nine billion, four million, nine hundred twenty-five thousand, three hundred ninety-one".