40473257 has 4 divisors (see below), whose sum is σ = 44152656. Its totient is φ = 36793860.

The previous prime is 40473253. The next prime is 40473263. The reversal of 40473257 is 75237404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40473257 - 2² = 40473253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40473253) 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, 1839683 + ... + 1839704.

It is an arithmetic number, because the mean of its divisors is an integer number (11038164).

Almost surely, 2^40473257 is an apocalyptic number.

It is an amenable number.

40473257 is a deficient number, since it is larger than the sum of its proper divisors (3679399).

40473257 is a wasteful number, since it uses less digits than its factorization.

40473257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679398.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 40473257 is about 6361.8595551930. The cubic root of 40473257 is about 343.3386682385.

The spelling of 40473257 in words is "forty million, four hundred seventy-three thousand, two hundred fifty-seven".