1097397939 has 32 divisors (see below), whose sum is σ = 1633927680. Its totient is φ = 649555200.

The previous prime is 1097397907. The next prime is 1097397979. The reversal of 1097397939 is 9397937901.

1097397939 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1097397939 - 2⁵ = 1097397907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1097397979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253239 + ... + 257535.

It is an arithmetic number, because the mean of its divisors is an integer number (51060240).

Almost surely, 2^1097397939 is an apocalyptic number.

1097397939 is a deficient number, since it is larger than the sum of its proper divisors (536529741).

1097397939 is a wasteful number, since it uses less digits than its factorization.

1097397939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491.

The product of its (nonzero) digits is 2893401, while the sum is 57.

The square root of 1097397939 is about 33126.9971322485. The cubic root of 1097397939 is about 1031.4655164924.

The spelling of 1097397939 in words is "one billion, ninety-seven million, three hundred ninety-seven thousand, nine hundred thirty-nine".