40090738 has 8 divisors (see below), whose sum is σ = 60731820. Its totient is φ = 19846800.

The previous prime is 40090733. The next prime is 40090747. The reversal of 40090738 is 83709004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36276529 + 3814209 = 6023^2 + 1953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40090733) 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, 99033 + ... + 99436.

Almost surely, 2^40090738 is an apocalyptic number.

40090738 is a deficient number, since it is larger than the sum of its proper divisors (20641082).

40090738 is a wasteful number, since it uses less digits than its factorization.

40090738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198572.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40090738 is about 6331.7247255388. The cubic root of 40090738 is about 342.2535937037.

The spelling of 40090738 in words is "forty million, ninety thousand, seven hundred thirty-eight".