40388253 has 8 divisors (see below), whose sum is σ = 56192448. Its totient is φ = 25754784.

The previous prime is 40388233. The next prime is 40388261. The reversal of 40388253 is 35288304.

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

It is not a de Polignac number, because 40388253 - 2⁹ = 40387741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40388233) 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, 292600 + ... + 292737.

It is an arithmetic number, because the mean of its divisors is an integer number (7024056).

Almost surely, 2^40388253 is an apocalyptic number.

It is an amenable number.

40388253 is a deficient number, since it is larger than the sum of its proper divisors (15804195).

40388253 is a wasteful number, since it uses less digits than its factorization.

40388253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585363.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 40388253 is about 6355.1752926257. The cubic root of 40388253 is about 343.0981339677.

The spelling of 40388253 in words is "forty million, three hundred eighty-eight thousand, two hundred fifty-three".