13919770 has 32 divisors (see below), whose sum is σ = 27258768. Its totient is φ = 5096448.

The previous prime is 13919767. The next prime is 13919771. The reversal of 13919770 is 7791931.

It can be written as a sum of positive squares in 8 ways, for example, as 13682601 + 237169 = 3699^2 + 487^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (13919771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5184 + ... + 7396.

Almost surely, 2^13919770 is an apocalyptic number.

13919770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13919770 is a deficient number, since it is larger than the sum of its proper divisors (13338998).

13919770 is a wasteful number, since it uses less digits than its factorization.

13919770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 13919770 is about 3730.9207978728. The cubic root of 13919770 is about 240.5529495868.

The spelling of 13919770 in words is "thirteen million, nine hundred nineteen thousand, seven hundred seventy".