1400391734 has 16 divisors (see below), whose sum is σ = 2401152000. Its totient is φ = 600047784.

The previous prime is 1400391721. The next prime is 1400391749. The reversal of 1400391734 is 4371930041.

It is a super-2 number, since 2×1400391734² = 3922194017311053512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1400391734.

It is a congruent number.

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, 129467 + ... + 139865.

It is an arithmetic number, because the mean of its divisors is an integer number (150072000).

Almost surely, 2^1400391734 is an apocalyptic number.

1400391734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1400391734 is a deficient number, since it is larger than the sum of its proper divisors (1000760266).

1400391734 is a wasteful number, since it uses less digits than its factorization.

1400391734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20027.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1400391734 is about 37421.8082673726. The cubic root of 1400391734 is about 1118.7932724687.

The spelling of 1400391734 in words is "one billion, four hundred million, three hundred ninety-one thousand, seven hundred thirty-four".