381077407 has 4 divisors (see below), whose sum is σ = 384573640. Its totient is φ = 377581176.

The previous prime is 381077399. The next prime is 381077413. The reversal of 381077407 is 704770183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704770183 = 13 ⋅54213091.

It is a cyclic number.

It is not a de Polignac number, because 381077407 - 2³ = 381077399 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 (381077497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747953 + ... + 1748170.

It is an arithmetic number, because the mean of its divisors is an integer number (96143410).

Almost surely, 2^381077407 is an apocalyptic number.

381077407 is a deficient number, since it is larger than the sum of its proper divisors (3496233).

381077407 is a wasteful number, since it uses less digits than its factorization.

381077407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496232.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 381077407 is about 19521.2040356121. The cubic root of 381077407 is about 724.9995446688. Note that the first 3 decimals are identical.

The spelling of 381077407 in words is "three hundred eighty-one million, seventy-seven thousand, four hundred seven".