40298247 has 24 divisors (see below), whose sum is σ = 64550928. Its totient is φ = 24019200.

The previous prime is 40298227. The next prime is 40298273. The reversal of 40298247 is 74289204.

40298247 is a `hidden beast` number, since 402 + 9 + 8 + 247 = 666.

It is not a de Polignac number, because 40298247 - 2⁷ = 40298119 is a prime.

It is a super-2 number, since 2×40298247² = 3247897422546018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40298227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2703 + ... + 9375.

It is an arithmetic number, because the mean of its divisors is an integer number (2689622).

Almost surely, 2^40298247 is an apocalyptic number.

40298247 is a deficient number, since it is larger than the sum of its proper divisors (24252681).

40298247 is a wasteful number, since it uses less digits than its factorization.

40298247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751 (or 6748 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40298247 is about 6348.0900277170. The cubic root of 40298247 is about 342.8430774736.

The spelling of 40298247 in words is "forty million, two hundred ninety-eight thousand, two hundred forty-seven".