1234397955 has 48 divisors (see below), whose sum is σ = 2307432960. Its totient is φ = 561855168.

The previous prime is 1234397939. The next prime is 1234397981. The reversal of 1234397955 is 5597934321.

It is a Cunningham number, because it is equal to 35134²-1.

It is not a de Polignac number, because 1234397955 - 2⁴ = 1234397939 is a prime.

It is a super-2 number, since 2×1234397955² = 3047476622616364050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172152 + ... + 179178.

It is an arithmetic number, because the mean of its divisors is an integer number (48071520).

Almost surely, 2^1234397955 is an apocalyptic number.

1234397955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1234397955 is a deficient number, since it is larger than the sum of its proper divisors (1073035005).

1234397955 is a wasteful number, since it uses less digits than its factorization.

1234397955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288 (or 7281 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 48.

The square root of 1234397955 is about 35133.9999857688. Note that the first 4 decimals coincide. The cubic root of 1234397955 is about 1072.7167562507.

The spelling of 1234397955 in words is "one billion, two hundred thirty-four million, three hundred ninety-seven thousand, nine hundred fifty-five".