103440405 has 16 divisors (see below), whose sum is σ = 165634560. Its totient is φ = 55124928.

The previous prime is 103440377. The next prime is 103440409. The reversal of 103440405 is 504044301.

It is not a de Polignac number, because 103440405 - 2⁷ = 103440277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103440409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29116 + ... + 32474.

It is an arithmetic number, because the mean of its divisors is an integer number (10352160).

Almost surely, 2^103440405 is an apocalyptic number.

103440405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103440405 is a deficient number, since it is larger than the sum of its proper divisors (62194155).

103440405 is a wasteful number, since it uses less digits than its factorization.

103440405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 103440405 is about 10170.5656184895. The cubic root of 103440405 is about 469.4219617812.

Adding to 103440405 its reverse (504044301), we get a palindrome (607484706).

The spelling of 103440405 in words is "one hundred three million, four hundred forty thousand, four hundred five".