38440477 has 4 divisors (see below), whose sum is σ = 40463680. Its totient is φ = 36417276.

The previous prime is 38440471. The next prime is 38440481. The reversal of 38440477 is 77404483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77404483 = 13 ⋅5954191.

It is a cyclic number.

It is not a de Polignac number, because 38440477 - 2¹⁹ = 37916189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38440471) 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, 1011573 + ... + 1011610.

It is an arithmetic number, because the mean of its divisors is an integer number (10115920).

Almost surely, 2^38440477 is an apocalyptic number.

It is an amenable number.

38440477 is a deficient number, since it is larger than the sum of its proper divisors (2023203).

38440477 is a wasteful number, since it uses less digits than its factorization.

38440477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023202.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 38440477 is about 6200.0384676226. The cubic root of 38440477 is about 337.4915648555.

The spelling of 38440477 in words is "thirty-eight million, four hundred forty thousand, four hundred seventy-seven".