40298491 has 8 divisors (see below), whose sum is σ = 41122368. Its totient is φ = 39480000.

The previous prime is 40298477. The next prime is 40298537. The reversal of 40298491 is 19489204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40298491 - 2⁵ = 40298459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40298491.

It is not an unprimeable number, because it can be changed into a prime (40298471) 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, 15966 + ... + 18316.

It is an arithmetic number, because the mean of its divisors is an integer number (5140296).

Almost surely, 2^40298491 is an apocalyptic number.

40298491 is a deficient number, since it is larger than the sum of its proper divisors (823877).

40298491 is a wasteful number, since it uses less digits than its factorization.

40298491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 40298491 is about 6348.1092460669. The cubic root of 40298491 is about 342.8437694271.

The spelling of 40298491 in words is "forty million, two hundred ninety-eight thousand, four hundred ninety-one".