11901390 has 16 divisors (see below), whose sum is σ = 28563408. Its totient is φ = 3173696.

The previous prime is 11901389. The next prime is 11901437. The reversal of 11901390 is 9310911.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11901390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198327 + ... + 198386.

It is an arithmetic number, because the mean of its divisors is an integer number (1785213).

Almost surely, 2^11901390 is an apocalyptic number.

11901390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11901390 is an abundant number, since it is smaller than the sum of its proper divisors (16662018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11901390 is a wasteful number, since it uses less digits than its factorization.

11901390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396723.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 11901390 is about 3449.8391266840. The cubic root of 11901390 is about 228.3140102402.

The spelling of 11901390 in words is "eleven million, nine hundred one thousand, three hundred ninety".