39893290 has 8 divisors (see below), whose sum is σ = 71807940. Its totient is φ = 15957312.

The previous prime is 39893219. The next prime is 39893291. The reversal of 39893290 is 9239893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39652209 + 241081 = 6297^2 + 491^2 .

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 (39893291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994655 + ... + 1994674.

Almost surely, 2^39893290 is an apocalyptic number.

39893290 is a deficient number, since it is larger than the sum of its proper divisors (31914650).

39893290 is a wasteful number, since it uses less digits than its factorization.

39893290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989336.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 39893290 is about 6316.1135201958. The cubic root of 39893290 is about 341.6907992737.

The spelling of 39893290 in words is "thirty-nine million, eight hundred ninety-three thousand, two hundred ninety".