40448253 has 8 divisors (see below), whose sum is σ = 57103488. Its totient is φ = 25379264.

The previous prime is 40448227. The next prime is 40448257. The reversal of 40448253 is 35284404.

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 40448253 - 2⁶ = 40448189 is a prime.

It is a super-2 number, since 2×40448253² = 3272122341504018, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40448253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40448257) 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, 396501 + ... + 396602.

It is an arithmetic number, because the mean of its divisors is an integer number (7137936).

Almost surely, 2^40448253 is an apocalyptic number.

It is an amenable number.

40448253 is a deficient number, since it is larger than the sum of its proper divisors (16655235).

40448253 is a wasteful number, since it uses less digits than its factorization.

40448253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793123.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 40448253 is about 6359.8941028920. The cubic root of 40448253 is about 343.2679498665.

The spelling of 40448253 in words is "forty million, four hundred forty-eight thousand, two hundred fifty-three".