39770690 has 8 divisors (see below), whose sum is σ = 71587260. Its totient is φ = 15908272.

The previous prime is 39770677. The next prime is 39770693. The reversal of 39770690 is 9607793.

39770690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37589161 + 2181529 = 6131^2 + 1477^2 .

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

It is a super-2 number, since 2×39770690² = 3163415566152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39770693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988525 + ... + 1988544.

Almost surely, 2^39770690 is an apocalyptic number.

39770690 is a deficient number, since it is larger than the sum of its proper divisors (31816570).

39770690 is a wasteful number, since it uses less digits than its factorization.

39770690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977076.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 39770690 is about 6306.4007167322. The cubic root of 39770690 is about 341.3404122050.

The spelling of 39770690 in words is "thirty-nine million, seven hundred seventy thousand, six hundred ninety".