46388381 has 4 divisors (see below), whose sum is σ = 49956732. Its totient is φ = 42820032.

The previous prime is 46388351. The next prime is 46388399. The reversal of 46388381 is 18388364.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32024281 + 14364100 = 5659^2 + 3790^2 .

It is a cyclic number.

It is not a de Polignac number, because 46388381 - 2⁶ = 46388317 is a prime.

It is a super-2 number, since 2×46388381² = 4303763783602322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46388341) 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, 1784156 + ... + 1784181.

It is an arithmetic number, because the mean of its divisors is an integer number (12489183).

Almost surely, 2^46388381 is an apocalyptic number.

It is an amenable number.

46388381 is a deficient number, since it is larger than the sum of its proper divisors (3568351).

46388381 is a wasteful number, since it uses less digits than its factorization.

46388381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568350.

The product of its digits is 110592, while the sum is 41.

The square root of 46388381 is about 6810.9016290063. The cubic root of 46388381 is about 359.3103592471.

The spelling of 46388381 in words is "forty-six million, three hundred eighty-eight thousand, three hundred eighty-one".