39440461 has 4 divisors (see below), whose sum is σ = 39520000. Its totient is φ = 39360924.

The previous prime is 39440413. The next prime is 39440501. The reversal of 39440461 is 16404493.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39440461 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 (39443461) 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, 39021 + ... + 40018.

It is an arithmetic number, because the mean of its divisors is an integer number (9880000).

Almost surely, 2^39440461 is an apocalyptic number.

It is an amenable number.

39440461 is a deficient number, since it is larger than the sum of its proper divisors (79539).

39440461 is an equidigital number, since it uses as much as digits as its factorization.

39440461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79538.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 39440461 is about 6280.1640902129. The cubic root of 39440461 is about 340.3930316492.

The spelling of 39440461 in words is "thirty-nine million, four hundred forty thousand, four hundred sixty-one".