9001257494 has 4 divisors (see below), whose sum is σ = 13501886244. Its totient is φ = 4500628746.

The previous prime is 9001257487. The next prime is 9001257497. The reversal of 9001257494 is 4947521009.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9001257497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2250314372 + ... + 2250314375.

It is an arithmetic number, because the mean of its divisors is an integer number (3375471561).

Almost surely, 2^9001257494 is an apocalyptic number.

9001257494 is a deficient number, since it is larger than the sum of its proper divisors (4500628750).

9001257494 is a wasteful number, since it uses less digits than its factorization.

9001257494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500628749.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 9001257494 is about 94874.9571488704. The cubic root of 9001257494 is about 2080.1806960561.

The spelling of 9001257494 in words is "nine billion, one million, two hundred fifty-seven thousand, four hundred ninety-four".