38207961 has 12 divisors (see below), whose sum is σ = 60206640. Its totient is φ = 23156280.

The previous prime is 38207957. The next prime is 38207977. The reversal of 38207961 is 16970283.

It is not a de Polignac number, because 38207961 - 2² = 38207957 is a prime.

It is a super-3 number, since 3×38207961³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (38207861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192871 + ... + 193068.

It is an arithmetic number, because the mean of its divisors is an integer number (5017220).

Almost surely, 2^38207961 is an apocalyptic number.

It is an amenable number.

38207961 is a deficient number, since it is larger than the sum of its proper divisors (21998679).

38207961 is a wasteful number, since it uses less digits than its factorization.

38207961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385956 (or 385953 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 38207961 is about 6181.2588523698. The cubic root of 38207961 is about 336.8097233207.

It can be divided in two parts, 3820 and 7961, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 38207961 in words is "thirty-eight million, two hundred seven thousand, nine hundred sixty-one".