40090457 has 4 divisors (see below), whose sum is σ = 43735056. Its totient is φ = 36445860.

The previous prime is 40090433. The next prime is 40090459. The reversal of 40090457 is 75409004.

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 not a de Polignac number, because 40090457 - 2¹⁰ = 40089433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40090459) 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, 1822283 + ... + 1822304.

It is an arithmetic number, because the mean of its divisors is an integer number (10933764).

Almost surely, 2^40090457 is an apocalyptic number.

It is an amenable number.

40090457 is a deficient number, since it is larger than the sum of its proper divisors (3644599).

40090457 is a wasteful number, since it uses less digits than its factorization.

40090457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644598.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40090457 is about 6331.7025356534. The cubic root of 40090457 is about 342.2527940719.

The spelling of 40090457 in words is "forty million, ninety thousand, four hundred fifty-seven".