1399212190 has 16 divisors (see below), whose sum is σ = 2566103328. Its totient is φ = 549124576.

The previous prime is 1399212173. The next prime is 1399212197. The reversal of 1399212190 is 912129931.

It is a happy number.

It is a super-2 number, since 2×1399212190² = 3915589505289192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399212197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319482 + ... + 1320541.

It is an arithmetic number, because the mean of its divisors is an integer number (160381458).

Almost surely, 2^1399212190 is an apocalyptic number.

1399212190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399212190 is a deficient number, since it is larger than the sum of its proper divisors (1166891138).

1399212190 is a wasteful number, since it uses less digits than its factorization.

1399212190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640083.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1399212190 is about 37406.0448323530. The cubic root of 1399212190 is about 1118.4790659627.

The spelling of 1399212190 in words is "one billion, three hundred ninety-nine million, two hundred twelve thousand, one hundred ninety".