3447390 has 16 divisors (see below), whose sum is σ = 8273808. Its totient is φ = 919296.

The previous prime is 3447377. The next prime is 3447407. The reversal of 3447390 is 937443.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 114913 = 3447390 / (3 + 4 + 4 + 7 + 3 + 9 + 0).

It is a Curzon number.

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, 57427 + ... + 57486.

It is an arithmetic number, because the mean of its divisors is an integer number (517113).

Almost surely, 2^3447390 is an apocalyptic number.

3447390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3447390 is an abundant number, since it is smaller than the sum of its proper divisors (4826418).

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

3447390 is a wasteful number, since it uses less digits than its factorization.

3447390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114923.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 3447390 is about 1856.7148407874. The cubic root of 3447390 is about 151.0648669449.

The spelling of 3447390 in words is "three million, four hundred forty-seven thousand, three hundred ninety".