1229406 has 24 divisors (see below), whose sum is σ = 2615640. Its totient is φ = 385152.

The previous prime is 1229401. The next prime is 1229443. The reversal of 1229406 is 6049221.

It is a super-2 number, since 2×1229406² = 3022878225672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1380 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (108985).

2^1229406 is an apocalyptic number.

1229406 is an abundant number, since it is smaller than the sum of its proper divisors (1386234).

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

1229406 is a wasteful number, since it uses less digits than its factorization.

1229406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1229406 is about 1108.7858224202. The cubic root of 1229406 is about 107.1268766007.

The spelling of 1229406 in words is "one million, two hundred twenty-nine thousand, four hundred six".