39918030 has 16 divisors (see below), whose sum is σ = 95803344. Its totient is φ = 10644800.

The previous prime is 39917981. The next prime is 39918059. The reversal of 39918030 is 3081993.

It is a junction number, because it is equal to n+sod(n) for n = 39917982 and 39918000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665271 + ... + 665330.

It is an arithmetic number, because the mean of its divisors is an integer number (5987709).

Almost surely, 2^39918030 is an apocalyptic number.

39918030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39918030 is an abundant number, since it is smaller than the sum of its proper divisors (55885314).

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

39918030 is a wasteful number, since it uses less digits than its factorization.

39918030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330611.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 39918030 is about 6318.0716994982. The cubic root of 39918030 is about 341.7614183636.

It can be divided in two parts, 3991 and 8030, that added together give a palindrome (12021).

The spelling of 39918030 in words is "thirty-nine million, nine hundred eighteen thousand, thirty".