39406930 has 8 divisors (see below), whose sum is σ = 70932492. Its totient is φ = 15762768.

The previous prime is 39406919. The next prime is 39406949. The reversal of 39406930 is 3960493.

It can be written as a sum of positive squares in 2 ways, for example, as 38452401 + 954529 = 6201^2 + 977^2 .

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

It is a super-2 number, since 2×39406930² = 3105812264049800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970337 + ... + 1970356.

Almost surely, 2^39406930 is an apocalyptic number.

39406930 is a deficient number, since it is larger than the sum of its proper divisors (31525562).

39406930 is a wasteful number, since it uses less digits than its factorization.

39406930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940700.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 39406930 is about 6277.4939267195. The cubic root of 39406930 is about 340.2965405965.

The spelling of 39406930 in words is "thirty-nine million, four hundred six thousand, nine hundred thirty".