40488451 has 4 divisors (see below), whose sum is σ = 40509504. Its totient is φ = 40467400.

The previous prime is 40488439. The next prime is 40488457. The reversal of 40488451 is 15488404.

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

It is a cyclic number.

It is not a de Polignac number, because 40488451 - 2⁹ = 40487939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40488457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7315 + ... + 11596.

It is an arithmetic number, because the mean of its divisors is an integer number (10127376).

Almost surely, 2^40488451 is an apocalyptic number.

40488451 is a deficient number, since it is larger than the sum of its proper divisors (21053).

40488451 is a wasteful number, since it uses less digits than its factorization.

40488451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21052.

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 40488451 is about 6363.0535908477. The cubic root of 40488451 is about 343.3816269348.

The spelling of 40488451 in words is "forty million, four hundred eighty-eight thousand, four hundred fifty-one".