40277381 has 8 divisors (see below), whose sum is σ = 40777344. Its totient is φ = 39780160.

The previous prime is 40277351. The next prime is 40277389. The reversal of 40277381 is 18377204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40277381 is a prime.

It is a super-2 number, since 2×40277381² = 3244534840438322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40277389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48290 + ... + 49116.

It is an arithmetic number, because the mean of its divisors is an integer number (5097168).

Almost surely, 2^40277381 is an apocalyptic number.

It is an amenable number.

40277381 is a deficient number, since it is larger than the sum of its proper divisors (499963).

40277381 is a wasteful number, since it uses less digits than its factorization.

40277381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 40277381 is about 6346.4463284582. The cubic root of 40277381 is about 342.7838937683.

The spelling of 40277381 in words is "forty million, two hundred seventy-seven thousand, three hundred eighty-one".