38542769 has 4 divisors (see below), whose sum is σ = 39871860. Its totient is φ = 37213680.

The previous prime is 38542741. The next prime is 38542771. The reversal of 38542769 is 96724583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96724583 = 8053 ⋅12011.

It can be written as a sum of positive squares in 2 ways, for example, as 31225744 + 7317025 = 5588^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 38542769 - 2¹⁶ = 38477233 is a prime.

It is a super-2 number, since 2×38542769² = 2971090084374722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38542709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664502 + ... + 664559.

It is an arithmetic number, because the mean of its divisors is an integer number (9967965).

Almost surely, 2^38542769 is an apocalyptic number.

It is an amenable number.

38542769 is a deficient number, since it is larger than the sum of its proper divisors (1329091).

38542769 is a wasteful number, since it uses less digits than its factorization.

38542769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329090.

The product of its digits is 362880, while the sum is 44.

The square root of 38542769 is about 6208.2822906179. The cubic root of 38542769 is about 337.7906602609.

The spelling of 38542769 in words is "thirty-eight million, five hundred forty-two thousand, seven hundred sixty-nine".