1398040226 has 8 divisors (see below), whose sum is σ = 2287702224. Its totient is φ = 635472820.

The previous prime is 1398040219. The next prime is 1398040249. The reversal of 1398040226 is 6220408931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31773620 + ... + 31773663.

It is an arithmetic number, because the mean of its divisors is an integer number (285962778).

Almost surely, 2^1398040226 is an apocalyptic number.

1398040226 is a deficient number, since it is larger than the sum of its proper divisors (889661998).

1398040226 is a wasteful number, since it uses less digits than its factorization.

1398040226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63547296.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1398040226 is about 37390.3761147170. The cubic root of 1398040226 is about 1118.1667036789.

The spelling of 1398040226 in words is "one billion, three hundred ninety-eight million, forty thousand, two hundred twenty-six".