40090490 has 16 divisors (see below), whose sum is σ = 78723360. Its totient is φ = 14578320.

The previous prime is 40090489. The next prime is 40090507. The reversal of 40090490 is 9409004.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182120 + ... + 182339.

It is an arithmetic number, because the mean of its divisors is an integer number (4920210).

Almost surely, 2^40090490 is an apocalyptic number.

40090490 is a deficient number, since it is larger than the sum of its proper divisors (38632870).

40090490 is a wasteful number, since it uses less digits than its factorization.

40090490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364477.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 40090490 is about 6331.7051415871. The cubic root of 40090490 is about 342.2528879790.

Adding to 40090490 its reverse (9409004), we get a palindrome (49499494).

The spelling of 40090490 in words is "forty million, ninety thousand, four hundred ninety".