249091398402 has 32 divisors (see below), whose sum is σ = 621111020544. Its totient is φ = 64699064400.

The previous prime is 249091398371. The next prime is 249091398427. The reversal of 249091398402 is 204893190942.

249091398402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269578974 + ... + 269579897.

It is an arithmetic number, because the mean of its divisors is an integer number (19409719392).

Almost surely, 2^249091398402 is an apocalyptic number.

249091398402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

249091398402 is an abundant number, since it is smaller than the sum of its proper divisors (372019622142).

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

249091398402 is a wasteful number, since it uses less digits than its factorization.

249091398402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539158894.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 249091398402 in words is "two hundred forty-nine billion, ninety-one million, three hundred ninety-eight thousand, four hundred two".