39970308 has 24 divisors (see below), whose sum is σ = 106587712. Its totient is φ = 11420064.

The previous prime is 39970303. The next prime is 39970309. The reversal of 39970308 is 80307993.

It is a happy number.

It is a super-2 number, since 2×39970308² = 3195251043229728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39970303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237835 + ... + 238002.

Almost surely, 2^39970308 is an apocalyptic number.

It is an amenable number.

39970308 is an abundant number, since it is smaller than the sum of its proper divisors (66617404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39970308 is a wasteful number, since it uses less digits than its factorization.

39970308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475851 (or 475849 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 39970308 is about 6322.2075258568. The cubic root of 39970308 is about 341.9105473790.

It can be divided in two parts, 399 and 70308, that added together give a palindrome (70707).

The spelling of 39970308 in words is "thirty-nine million, nine hundred seventy thousand, three hundred eight".