40453819 has 4 divisors (see below), whose sum is σ = 46232944. Its totient is φ = 34674696.

The previous prime is 40453807. The next prime is 40453823. The reversal of 40453819 is 91835404.

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

It is not a de Polignac number, because 40453819 - 2⁹ = 40453307 is a prime.

It is a super-2 number, since 2×40453819² = 3273022943369522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40453859) 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, 2889552 + ... + 2889565.

It is an arithmetic number, because the mean of its divisors is an integer number (11558236).

Almost surely, 2^40453819 is an apocalyptic number.

40453819 is a deficient number, since it is larger than the sum of its proper divisors (5779125).

40453819 is an equidigital number, since it uses as much as digits as its factorization.

40453819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5779124.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 40453819 is about 6360.3316737416. The cubic root of 40453819 is about 343.2836946072.

The spelling of 40453819 in words is "forty million, four hundred fifty-three thousand, eight hundred nineteen".