38961889 has 12 divisors (see below), whose sum is σ = 40494960. Its totient is φ = 37473800.

The previous prime is 38961887. The next prime is 38961953. The reversal of 38961889 is 98816983.

It is not a de Polignac number, because 38961889 - 2¹ = 38961887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38961887) 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, 297354 + ... + 297484.

It is an arithmetic number, because the mean of its divisors is an integer number (3374580).

Almost surely, 2^38961889 is an apocalyptic number.

It is an amenable number.

38961889 is a deficient number, since it is larger than the sum of its proper divisors (1533071).

38961889 is an equidigital number, since it uses as much as digits as its factorization.

38961889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 261 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 38961889 is about 6241.9459305572. The cubic root of 38961889 is about 339.0106446596.

The spelling of 38961889 in words is "thirty-eight million, nine hundred sixty-one thousand, eight hundred eighty-nine".