40090619 has 4 divisors (see below), whose sum is σ = 40103496. Its totient is φ = 40077744.

The previous prime is 40090601. The next prime is 40090621. The reversal of 40090619 is 91609004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40090619 - 2²⁰ = 39042043 is a prime.

It is a super-2 number, since 2×40090619² = 3214515463606322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40090591 and 40090600.

It is not an unprimeable number, because it can be changed into a prime (40090649) 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, 1472 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (10025874).

Almost surely, 2^40090619 is an apocalyptic number.

40090619 is a deficient number, since it is larger than the sum of its proper divisors (12877).

40090619 is an equidigital number, since it uses as much as digits as its factorization.

40090619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12876.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 40090619 is about 6331.7153284083. The cubic root of 40090619 is about 342.2532550700.

It can be divided in two parts, 400 and 90619, that added together give a palindrome (91019).

The spelling of 40090619 in words is "forty million, ninety thousand, six hundred nineteen".