39949402 has 8 divisors (see below), whose sum is σ = 59996916. Its totient is φ = 19950432.

The previous prime is 39949397. The next prime is 39949409. The reversal of 39949402 is 20494993.

It can be written as a sum of positive squares in 2 ways, for example, as 36228361 + 3721041 = 6019^2 + 1929^2 .

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 (39949409) 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, 10003 + ... + 13414.

Almost surely, 2^39949402 is an apocalyptic number.

39949402 is a deficient number, since it is larger than the sum of its proper divisors (20047514).

39949402 is a wasteful number, since it uses less digits than its factorization.

39949402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24272.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 39949402 is about 6320.5539314209. The cubic root of 39949402 is about 341.8509262181.

The spelling of 39949402 in words is "thirty-nine million, nine hundred forty-nine thousand, four hundred two".