40890054 has 16 divisors (see below), whose sum is σ = 84418560. Its totient is φ = 13190280.

The previous prime is 40890043. The next prime is 40890061. The reversal of 40890054 is 45009804.

It is a super-2 number, since 2×40890054² = 3343993032245832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109734 + ... + 110105.

It is an arithmetic number, because the mean of its divisors is an integer number (5276160).

Almost surely, 2^40890054 is an apocalyptic number.

40890054 is an abundant number, since it is smaller than the sum of its proper divisors (43528506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40890054 is a wasteful number, since it uses less digits than its factorization.

40890054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219875.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40890054 is about 6394.5331338574. The cubic root of 40890054 is about 344.5132223469.

Adding to 40890054 its reverse (45009804), we get a palindrome (85899858).

The spelling of 40890054 in words is "forty million, eight hundred ninety thousand, fifty-four".