39000030 has 32 divisors (see below), whose sum is σ = 95001984. Its totient is φ = 10244256.

The previous prime is 39000001. The next prime is 39000037. The reversal of 39000030 is 3000093.

39000030 = 3121² + 3122² + ... + 3124².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 38999973 and 39000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39000037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7692 + ... + 11711.

It is an arithmetic number, because the mean of its divisors is an integer number (2968812).

Almost surely, 2^39000030 is an apocalyptic number.

39000030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39000030 is an abundant number, since it is smaller than the sum of its proper divisors (56001954).

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

39000030 is a wasteful number, since it uses less digits than its factorization.

39000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19480.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 39000030 is about 6245.0004003202. Note that the first 3 decimals coincide. The cubic root of 39000030 is about 339.1212312555.

The spelling of 39000030 in words is "thirty-nine million, thirty", and thus it is an aban number and an uban number.