39400493 has 8 divisors (see below), whose sum is σ = 43073856. Its totient is φ = 35742400.

The previous prime is 39400463. The next prime is 39400507.

39400493 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 39400493 - 2¹⁰ = 39399469 is a prime.

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 (39400453) 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, 1973 + ... + 9093.

It is an arithmetic number, because the mean of its divisors is an integer number (5384232).

Almost surely, 2^39400493 is an apocalyptic number.

It is an amenable number.

39400493 is a deficient number, since it is larger than the sum of its proper divisors (3673363).

39400493 is a wasteful number, since it uses less digits than its factorization.

39400493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7635.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 39400493 is about 6276.9812011826. The cubic root of 39400493 is about 340.2780107921.

It can be divided in two parts, 39400 and 493, that added together give a palindrome (39893).

The spelling of 39400493 in words is "thirty-nine million, four hundred thousand, four hundred ninety-three".