40297456 has 10 divisors (see below), whose sum is σ = 78076352. Its totient is φ = 20148720.

The previous prime is 40297447. The next prime is 40297459. The reversal of 40297456 is 65479204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40297459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259280 + ... + 1259311.

Almost surely, 2^40297456 is an apocalyptic number.

It is an amenable number.

40297456 is a deficient number, since it is larger than the sum of its proper divisors (37778896).

40297456 is a wasteful number, since it uses less digits than its factorization.

40297456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518599 (or 2518593 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 40297456 is about 6348.0277252073. The cubic root of 40297456 is about 342.8408342772.

The spelling of 40297456 in words is "forty million, two hundred ninety-seven thousand, four hundred fifty-six".