291485494 has 4 divisors (see below), whose sum is σ = 437228244. Its totient is φ = 145742746.

The previous prime is 291485473. The next prime is 291485497. The reversal of 291485494 is 494584192.

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 (291485497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72871372 + ... + 72871375.

It is an arithmetic number, because the mean of its divisors is an integer number (109307061).

Almost surely, 2^291485494 is an apocalyptic number.

291485494 is a deficient number, since it is larger than the sum of its proper divisors (145742750).

291485494 is a wasteful number, since it uses less digits than its factorization.

291485494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145742749.

The product of its digits is 414720, while the sum is 46.

The square root of 291485494 is about 17072.9462600923. The cubic root of 291485494 is about 663.0388592739.

The spelling of 291485494 in words is "two hundred ninety-one million, four hundred eighty-five thousand, four hundred ninety-four".