1398215402 has 16 divisors (see below), whose sum is σ = 2190084480. Its totient is φ = 668230992.

The previous prime is 1398215389. The next prime is 1398215411. The reversal of 1398215402 is 2045128931.

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, 58499 + ... + 78857.

It is an arithmetic number, because the mean of its divisors is an integer number (136880280).

Almost surely, 2^1398215402 is an apocalyptic number.

1398215402 is a deficient number, since it is larger than the sum of its proper divisors (791869078).

1398215402 is a wasteful number, since it uses less digits than its factorization.

1398215402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1398215402 is about 37392.7185692616. The cubic root of 1398215402 is about 1118.2134042402.

The spelling of 1398215402 in words is "one billion, three hundred ninety-eight million, two hundred fifteen thousand, four hundred two".