39930511 has 12 divisors (see below), whose sum is σ = 42413016. Its totient is φ = 37564560.

The previous prime is 39930491. The next prime is 39930523. The reversal of 39930511 is 11503993.

It is not a de Polignac number, because 39930511 - 2⁷ = 39930383 is a prime.

It is a super-2 number, since 2×39930511² = 3188891417442242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39930211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34996 + ... + 36118.

It is an arithmetic number, because the mean of its divisors is an integer number (3534418).

Almost surely, 2^39930511 is an apocalyptic number.

39930511 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

39930511 is a deficient number, since it is larger than the sum of its proper divisors (2482505).

39930511 is a wasteful number, since it uses less digits than its factorization.

39930511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 39930511 is about 6319.0593445544. The cubic root of 39930511 is about 341.7970336798.

The spelling of 39930511 in words is "thirty-nine million, nine hundred thirty thousand, five hundred eleven".